Dell Inspiron 16 5645 Owners Manual
Dell Inspiron 16 5645 Manual
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- Dell Inspiron 16 5645 | Owners Manual - Page 1
Inspiron 16 5645 Owner's Manual Regulatory Model: P131F Regulatory Type: P131F002 April 2024 Rev. A01 - Dell Inspiron 16 5645 | Owners Manual - Page 2
use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2024 Dell Inc. or its subsidiaries. All rights reserved. Dell - Dell Inspiron 16 5645 | Owners Manual - Page 3
Contents Chapter 1: Views of Inspiron 16 5645 7 Right...7 Left...7 Top...8 Front...9 Bottom...10 Service Tag...11 Battery charge and status light ...11 Chapter 2: Set up your Inspiron 16 5645 12 Chapter 3: Specifications of Inspiron 16 5645 14 Dimensions and weight...14 Processor...14 Chipset... - Dell Inspiron 16 5645 | Owners Manual - Page 4
Electrostatic discharge-ESD protection...28 ESD Field Service kit ...29 Transporting sensitive components...30 After working inside your computer...30 BitLocker...30 Recommended tools...30 Screw list...30 Major components of Inspiron 16 5645...32 Chapter 5: Removing and installing Customer - Dell Inspiron 16 5645 | Owners Manual - Page 5
existing system setup password 98 Clearing BIOS (System Setup) and System passwords 98 Chapter 9: Troubleshooting...99 Handling swollen rechargeable Li-ion batteries...99 Locate the Service Tag or Express Service Code of your Dell computer 99 Dell SupportAssist Pre-boot System Performance Check - Dell Inspiron 16 5645 | Owners Manual - Page 6
Wi-Fi power cycle...103 Drain residual flea power (perform hard reset)...103 Chapter 10: Getting help and contacting Dell Technologies 105 6 Contents - Dell Inspiron 16 5645 | Owners Manual - Page 7
Right 1 Views of Inspiron 16 5645 Figure 1. Right view 1. SD-card slot Reads from and writes to the SD card. The computer supports the following card types: ● Secure Digital (SD) ● Secure Digital High Capacity (SDHC) ● Secure Digital Extended Capacity (SDXC) 2. Universal audio port Connect - Dell Inspiron 16 5645 | Owners Manual - Page 8
1.4 and Power Delivery port Connect devices such as external storage devices, printers, and external displays. Supports Power Delivery that enables two-way power supply between devices. Provides up to 15 W power output your finger on the power button steadily to log in. 8 Views of Inspiron 16 5645 - Dell Inspiron 16 5645 | Owners Manual - Page 9
use. 3. Camera Enables you to video chat, capture photos, and record videos. 4. Camera-status light Turns on when the camera is in use. Views of Inspiron 16 5645 9 - Dell Inspiron 16 5645 | Owners Manual - Page 10
speaker Provides audio output. 2. Service Tag label The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware components in the Knowledge Base Resource at Dell Support Site. 4. Left speaker Provides audio output. 10 Views of Inspiron 16 5645 - Dell Inspiron 16 5645 | Owners Manual - Page 11
hardware components in your computer and access warranty information. Figure 6. Service Tag location Battery charge and status light The following table lists the battery charge and status light behavior of your Inspiron 16 5645. Table 1. Battery charge and status light behavior Power Source AC - Dell Inspiron 16 5645 | Owners Manual - Page 12
the operating system setup. For Windows: Follow the on-screen instructions to complete the setup. When setting up, Dell Technologies Support and Protection screen, enter your contact details. 3. Locate and use Dell apps from the Windows Start menu-Recommended. 12 Set up your Inspiron 16 5645 - Dell Inspiron 16 5645 | Owners Manual - Page 13
For more information about how to use MyDell, see product guides at Dell Support Site. Dell Update Updates your computer with critical fixes Guide at SupportAssist for Home PCs. NOTE: In SupportAssist, click the warranty expiry date to renew or upgrade your warranty. Set up your Inspiron 16 5645 - Dell Inspiron 16 5645 | Owners Manual - Page 14
: 1.87 kg (4.12 lb) ● Maximum: 1.93 kg (4.25 lb) Processor The following table lists the details of the processors that are supported for your Inspiron 16 5645. Table 4. Processor Description Processor type Option one AMD Ryzen 5 8540U Option two AMD Ryzen 7 8840U Processor wattage 15 W 15 - Dell Inspiron 16 5645 | Owners Manual - Page 15
Processor AMD Ryzen series DRAM bus width 64-bit Flash EPROM 32 MB PCIe bus Up to Gen4 Operating system Your Inspiron 16 5645 supports the following operating systems: ● Windows 11 Home ● Windows 11 Home National Academic ● Windows 11 Pro ● Windows 11 Pro National Academic Memory - Dell Inspiron 16 5645 | Owners Manual - Page 16
Site. Wireless module The following table lists the Wireless Local Area Network (WLAN) modules that are supported on your Inspiron 16 5645. Table 9. Wireless module specifications Description Option one Model number Realtek RTL8852BE Option two Realtek RTL8852CE Transfer rate 1.20 Gbps - Dell Inspiron 16 5645 | Owners Manual - Page 17
Microphone Dual-array microphones Storage This section lists the storage options on your Inspiron 16 5645. Your Inspiron 16 5645 supports only one M.2 2230 solid-state drive. Table 11. Storage specifications Storage type Interface type M.2 2230 PCIe NVMe Class 25 solidstate drive Gen - Dell Inspiron 16 5645 | Owners Manual - Page 18
-card reader The following table lists the media cards that are supported on your Inspiron 16 5645. Table 12. Media-card reader specifications Description Media-card type Values One SD-card slot Media-cards supported ● Secure Digital (SD) ● Secure Digital High Capacity (SDHC) ● Secure Digital - Dell Inspiron 16 5645 | Owners Manual - Page 19
system and application-specific F10 behavior Operating system and application-specific F11 behavior Operating system and application-specific F12 behavior Pause or Break Specifications of Inspiron 16 5645 19 - Dell Inspiron 16 5645 | Owners Manual - Page 20
the document) End (move to the end of the document) Camera The following table lists the camera specifications of your Inspiron 16 5645. Table 16. Camera specifications Description Number of cameras Values One Camera type RGB FHD camera Camera location Front Camera sensor type CMOS sensor - Dell Inspiron 16 5645 | Owners Manual - Page 21
touchpad gestures available on Windows, see the Microsoft Knowledge Base article at Microsoft Support Site. Power adapter The following table lists the power adapter specifications of your Inspiron 16 5645. Table 18. Power adapter specifications Description Type Values 65 W Connector dimensions - Dell Inspiron 16 5645 | Owners Manual - Page 22
The following table lists the battery specifications of your Inspiron 16 5645. Table 19. Battery specifications Description Battery type Dell Power Manager, search in the Knowledge Base Resource at Dell Support Site. Varies depending on operating conditions and can significantly reduce under - Dell Inspiron 16 5645 | Owners Manual - Page 23
Display The following table lists the display specifications of your Inspiron 16 5645. Table 20. Display specifications Description Option one Display type 16" Full High Definition Plus (FHD+) with ComfortView Option two 16" Full High Definition Plus (FHD+) with ComfortView Plus Touch - Dell Inspiron 16 5645 | Owners Manual - Page 24
displays with laptop display enabled Supported external displays with laptop display disabled AMD Radeon 740M/780M Graphics 2 2 NOTE: For more information about external display support, see the External Display Connection Guide on Dell Support Site. 24 Specifications of Inspiron 16 5645 - Dell Inspiron 16 5645 | Owners Manual - Page 25
table lists the operating and storage specifications of your Inspiron 16 5645. Airborne contaminant level: G1 as defined by ISA half-sine pulse. Dell support policy For information about Dell support policy, search in the Knowledge Base Resource at Dell Support Site. ComfortView WARNING: Prolonged - Dell Inspiron 16 5645 | Owners Manual - Page 26
(609.60 cm) away for at least 20 seconds during each break. ● Take an extended break for 20 minutes every two hours. 26 Specifications of Inspiron 16 5645 - Dell Inspiron 16 5645 | Owners Manual - Page 27
and the contacts. CAUTION: You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that is shipped with the product or at - Dell Inspiron 16 5645 | Owners Manual - Page 28
performing any disassembly instructions. Observe the . This is done by using a field service electrostatic discharge (ESD) kit. When connecting not be obvious, such as intermittent problems or a shortened product life span type of damage to recognize and troubleshoot is the intermittent (also called - Dell Inspiron 16 5645 | Owners Manual - Page 29
physical connection of the wrist strap and bonding wire between your skin, the ESD mat, and the hardware is known as bonding. Use only Field Service kits with a wrist strap, mat, and bonding wire. Never use wireless wrist straps. Always be aware that the internal wires of a wrist strap are prone - Dell Inspiron 16 5645 | Owners Manual - Page 30
Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport. After working inside your computer About this task CAUTION: Leaving stray or loose - Dell Inspiron 16 5645 | Owners Manual - Page 31
Table 27. Screw list (continued) Component Screw type Base cover Captive screw Quantity 2 Solid-state drive mounting bracket Solid-state drive Wireless card Fan M2x5.5 M2x3.5 M1.6x1.8 M2x3.5 M2x5.5 Battery Heat sink M2x3.5 Captive screws 6 3 1 1 2 FRU 5 4 Screw image Touchpad assembly - Dell Inspiron 16 5645 | Owners Manual - Page 32
Screw type board as a service part and MUST NOT be removed from the system board. Quantity Screw image Major components of Inspiron 16 5645 The following image shows the major components of Inspiron 16 5645. Figure 7. Major components of Inspiron 16 5645 32 Working inside your computer - Dell Inspiron 16 5645 | Owners Manual - Page 33
10. Touchpad assembly 11. M.2 2230 solid-state drive with thermal plate 12. Fan 13. Heat sink 14. Power-adapter port 15. I/O board 16. Power button with optional fingerprint reader NOTE: Dell provides a list of components and their part numbers for the original computer configuration purchased - Dell Inspiron 16 5645 | Owners Manual - Page 34
5 Removing and installing Customer Replaceable Units (CRUs) The replaceable components in this chapter are Customer Replaceable Units (CRUs). CAUTION: Customers can replace only the Customer Replaceable Units (CRUs) following the safety precautions and replacement procedures. NOTE: The images in - Dell Inspiron 16 5645 | Owners Manual - Page 35
Removing and installing Customer Replaceable Units (CRUs) 35 - Dell Inspiron 16 5645 | Owners Manual - Page 36
36 Removing and installing Customer Replaceable Units (CRUs) - Dell Inspiron 16 5645 | Owners Manual - Page 37
Figure 8. Removing the base cover Steps 1. Remove the six screws (M2x5.5) and loosen the two captive screws that secure the base cover to the palm-rest and keyboard assembly. 2. Using a plastic scribe, pry open the base cover starting from the recesses, which are located in the U-shaped indents at - Dell Inspiron 16 5645 | Owners Manual - Page 38
38 Removing and installing Customer Replaceable Units (CRUs) - Dell Inspiron 16 5645 | Owners Manual - Page 39
Figure 9. Installing the base cover Steps 1. Connect the battery cable to its connector (BATT) on the system board. 2. Place the base cover on top of the palm-rest and keyboard assembly. 3. Align the screw holes on the base cover with the screw holes on the palm-rest and keyboard assembly, and snap - Dell Inspiron 16 5645 | Owners Manual - Page 40
this task The following images indicate the location of the memory module and provide a visual representation of the removal procedure. NOTE: Inspiron 16 5645 supports a dual-channel RAM memory configuration. Figure 10. Removing the memory module Steps 1. Lift the Mylar to access the memory module - Dell Inspiron 16 5645 | Owners Manual - Page 41
following images indicate the location of the memory module and provide a visual representation of the installation procedure. NOTE: Inspiron 16 5645 supports a dual-channel RAM memory configuration. Figure 11. Installing the memory module Removing and installing Customer Replaceable Units (CRUs - Dell Inspiron 16 5645 | Owners Manual - Page 42
Steps 1. Lift the Mylar to access the memory-module slot. 2. Align the notch on the memory module with the tab on the memory-module slot (DIMM A DDR5 ONLY or DIMM B DDR5 ONLY) on the system board. 3. Slide the memory module firmly into the memory-module slot at an angle. 4. Press down on the memory - Dell Inspiron 16 5645 | Owners Manual - Page 43
Steps 1. Remove the three screws (M2x3.5) that secure the solid-state drive assembly to the system board. 2. Slide and lift the solid-state drive assembly from the M.2 card slot (SSD) on the system board. 3. Flip over the solid-state drive assembly and remove the screw (M1.6x1.8) that secures the - Dell Inspiron 16 5645 | Owners Manual - Page 44
Wireless card Removing the wireless card Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task The following images indicate the location of the wireless card and provide a visual representation of the removal procedure. Figure 14. - Dell Inspiron 16 5645 | Owners Manual - Page 45
the wireless-antenna cables to the wireless card. The following table provides the antenna-cable color scheme for the wireless card that is supported by your computer. Table 28. Antenna-cable color scheme Connector on the wireless card Antenna-cable color Main White Silkscreen marking MAIN - Dell Inspiron 16 5645 | Owners Manual - Page 46
Table 28. Antenna-cable color scheme (continued) Connector on the wireless card Antenna-cable color Silkscreen marking Auxiliary Black AUX ▲ (black triangle) 2. At an angle, slide the wireless card into the wireless-card slot (WLAN) on the system board. 3. Place the wireless-card bracket on - Dell Inspiron 16 5645 | Owners Manual - Page 47
Figure 16. Removing the speakers Steps 1. Disconnect the speaker cable from its connector (SPK) on the system board. NOTE: To disconnect the speaker cable from the connector - Dell Inspiron 16 5645 | Owners Manual - Page 48
2. Unroute and remove the speaker cable from the routing guides on palm-rest and keyboard assembly. 3. Lift the speakers, along with the cable, off the palm-rest and keyboard assembly. Installing the speakers Prerequisites If - Dell Inspiron 16 5645 | Owners Manual - Page 49
Figure 17. Installing the speakers Steps 1. NOTE: If the rubber grommets are pushed out when removing the speakers, push them back in before replacing the speakers. Using the alignment posts and rubber grommets, place the speakers in the slots on the palm-rest and keyboard assembly. NOTE: - Dell Inspiron 16 5645 | Owners Manual - Page 50
on the palm-rest and keyboard assembly. NOTE: The speaker cable must be routed through the routing guides to avoid damaging the speaker cable when installing the base cover. 3. Connect the speaker cable to its connector (SPK) on the system board. Next steps 1. - Dell Inspiron 16 5645 | Owners Manual - Page 51
Figure 18. Removing the fan Steps 1. Disconnect the fan cable from its connector (FAN) on the system board. 2. Remove the two screws (M2x5.5) that secure the fan to the palm-rest and keyboard assembly. 3. Lift the fan, along with the fan cable, off the palm-rest and keyboard assembly. Installing the - Dell Inspiron 16 5645 | Owners Manual - Page 52
Figure 19. Installing the fan Steps 1. Place and align the fan, along with fan cable, in the slot on the palm-rest and keyboard assembly. 2. Align the screw holes on the fan to the screw holes on the palm-rest and keyboard assembly. 3. Replace the two screws (M2x5.5) that secure the fan to the palm- - Dell Inspiron 16 5645 | Owners Manual - Page 53
kind to pry on or against the battery. ● Ensure any screws during the servicing of this product are not lost or misplaced, to prevent accidental puncture or damage an instance, contact Dell technical support for assistance. See Contact Support at Dell Support Site. ● Always purchase genuine - Dell Inspiron 16 5645 | Owners Manual - Page 54
the battery and provides a visual representation of the removal procedure. NOTE: Inspiron 16 5645 supports the following: ● 4-cell, 54 Wh, Lithium Ion Polymer, ExpressCharge this section is intended for authorized service technicians only. 54 Removing and installing Field Replaceable Units (FRUs) - Dell Inspiron 16 5645 | Owners Manual - Page 55
and provides a visual representation of the removal procedure. Figure 21. Disconnecting the battery cable Steps 1. Remove the battery cable from the routing guides on the battery. To disconnect the battery cable, first push the latch downward to release the connector, and then pull the connector - Dell Inspiron 16 5645 | Owners Manual - Page 56
Connecting the battery cable CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the - Dell Inspiron 16 5645 | Owners Manual - Page 57
on the battery and close the latch. 2. Route the battery cable through the routing guides on the battery. Next steps 1. Install the battery. 2. Install the base cover : The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, - Dell Inspiron 16 5645 | Owners Manual - Page 58
Figure 23. Installing the battery Steps 1. Place the battery, along with the battery cable, in the slot on the palm-rest and keyboard assembly. 2. Align the screw holes on the battery to the screw holes on the palm-rest and keyboard assembly. NOTE: While installing the battery, insert the cut-outs - Dell Inspiron 16 5645 | Owners Manual - Page 59
Heat sink Removing the heat sink CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task NOTE: The heat sink may become - Dell Inspiron 16 5645 | Owners Manual - Page 60
Installing the heat sink CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task NOTE: If either the system - Dell Inspiron 16 5645 | Owners Manual - Page 61
Touchpad Removing the touchpad assembly CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the battery. About this task The following images - Dell Inspiron 16 5645 | Owners Manual - Page 62
CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, procedure. About this task NOTE: Ensure that the touchpad is aligned with the guides available on the palm-rest and keyboard assembly, and the gap on either - Dell Inspiron 16 5645 | Owners Manual - Page 63
Figure 27. Installing the touchpad assembly Steps 1. Align and place the touchpad, along with the touchpad cable, in the slot on the palm-rest and keyboard assembly. 2. Replace the two screws (M2x2.3) that secure the touchpad assembly to the palm-rest and keyboard assembly. 3. Place the touchpad - Dell Inspiron 16 5645 | Owners Manual - Page 64
Display assembly Removing the display assembly CAUTION: The information in this section is intended for authorized service technicians only. CAUTION: The maximum operating angle for the display-panel hinge is 135 degrees. Prerequisites 1. Follow the procedure in Before working inside your computer. - Dell Inspiron 16 5645 | Owners Manual - Page 65
(eDP) on the system board. 3. Remove the display cable from the routing guides on the palm-rest and keyboard assembly. 4. Open the hinges to a 90-degree CAUTION: The information in this section is intended for authorized service technicians only. CAUTION: The maximum operating angle for the - Dell Inspiron 16 5645 | Owners Manual - Page 66
About this task NOTE: Ensure that the display hinges are opened to the maximum before replacing the display assembly on the palm-rest and keyboard assembly. The following images indicate the location of the display assembly and provide a visual representation of the installation procedure. 66 - Dell Inspiron 16 5645 | Owners Manual - Page 67
working inside your computer. I/O-board cable Removing the I/O-board cable CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the fan. About - Dell Inspiron 16 5645 | Owners Manual - Page 68
the palm-rest and keyboard assembly. Installing the I/O-board cable CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this - Dell Inspiron 16 5645 | Owners Manual - Page 69
procedure in After working inside your computer. I/O board Removing the I/O board CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task The - Dell Inspiron 16 5645 | Owners Manual - Page 70
from the palm-rest and keyboard assembly. Installing the I/O board CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task - Dell Inspiron 16 5645 | Owners Manual - Page 71
Figure 33. Installing the I/O board Steps 1. Align the ports on the I/O board to the port openings on the palm-rest and keyboard assembly. 2. Carefully slide and place the I/O board at an angle, on the palm-rest and keyboard assembly. 3. Align the screw holes on the I/O board to the screw holes on - Dell Inspiron 16 5645 | Owners Manual - Page 72
Power button Removing the power button CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the I/O board. About this task The following image - Dell Inspiron 16 5645 | Owners Manual - Page 73
Installing the power button CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the - Dell Inspiron 16 5645 | Owners Manual - Page 74
fingerprint reader Removing the power button with optional fingerprint reader CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the I/O board - Dell Inspiron 16 5645 | Owners Manual - Page 75
Installing the power button with optional fingerprint reader CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task NOTE: - Dell Inspiron 16 5645 | Owners Manual - Page 76
inside your computer. Power-adapter port Removing the power-adapter port CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task The following - Dell Inspiron 16 5645 | Owners Manual - Page 77
(DCIN) on the system board. 4. Remove the power-adapter port cable through the guide on the palm-rest and keyboard assembly. 5. Remove the power-adapter port from the : The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, - Dell Inspiron 16 5645 | Owners Manual - Page 78
out when the right hinge is removed. 2. Route the power-adapter port cable through the guide on the palm-rest and keyboard assembly. 3. Connect the power-adapter port cable to its section is intended for authorized service technicians only. 78 Removing and installing Field Replaceable Units (FRUs) - Dell Inspiron 16 5645 | Owners Manual - Page 79
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the memory module. 4. Remove the solid-state drive. 5. Remove the wireless card. 6. Remove the fan. 7. Remove the heat sink. NOTE: When removing the system board to replace/access other - Dell Inspiron 16 5645 | Owners Manual - Page 80
The following images indicate the location of the system board and provide a visual representation of the removal procedure. 80 Removing and installing Field Replaceable Units (FRUs) - Dell Inspiron 16 5645 | Owners Manual - Page 81
keyboard assembly. NOTE: A USB Type-C bracket is secured to the system board with a single screw (M2x3.5). The bracket is bundled with the system board as a service part and MUST NOT be removed from the system board. Removing and installing Field Replaceable Units (FRUs) 81 - Dell Inspiron 16 5645 | Owners Manual - Page 82
the palm-rest and keyboard assembly. Installing the system board CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task - Dell Inspiron 16 5645 | Owners Manual - Page 83
Figure 43. System board overview 1. I/O board cable (IO) 2. Wireless card slot (WLAN) 3. Display cable (eDP) 4. Power-adapter port cable (DCIN) 5. Memory slots x2 (DIMM A DDR5 ONLY + DIMM B DDR5 ONLY) 6. Keyboard cable (KB) 7. Keyboard-backlight cable (BL) 8. Battery cable (BATT) 9. Touchpad cable ( - Dell Inspiron 16 5645 | Owners Manual - Page 84
84 Removing and installing Field Replaceable Units (FRUs) - Dell Inspiron 16 5645 | Owners Manual - Page 85
assembly. NOTE: A USB Type-C bracket is secured to the system board with a single screw (M2x3.5). The bracket is bundled with the system board as a service part and MUST NOT be removed from the system board. 6. Connect the following cables to the system board: a. I/O board cable to its connector (IO - Dell Inspiron 16 5645 | Owners Manual - Page 86
the I/O board. 14. Remove the power button or the power button with optional fingerprint reader, whichever is applicable. 15. Remove the power-adapter port. 16. Remove the system board. NOTE: The system board can be removed with the heat sink attached to it in order to simplify the procedure and - Dell Inspiron 16 5645 | Owners Manual - Page 87
and keyboard assembly. Installing the palm-rest and keyboard assembly CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this - Dell Inspiron 16 5645 | Owners Manual - Page 88
. 11. Install the speakers. 12. Install the wireless card. 13. Install the solid-state drive. 14. Install the memory module. 15. Install the base cover. 16. Follow the procedure in After working inside your computer. 88 Removing and installing Field Replaceable Units (FRUs) - Dell Inspiron 16 5645 | Owners Manual - Page 89
along with instructions on how to install the drivers. Operating system Your Inspiron 16 5645 supports the following operating systems: ● Windows 11 Home ● Windows 11 Home National Academic ● Windows 11 Pro ● Windows 11 Pro National Academic Drivers and downloads When troubleshooting, downloading - Dell Inspiron 16 5645 | Owners Manual - Page 90
8 BIOS Setup CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup. Certain changes can make your computer work incorrectly. NOTE: Depending on the computer and its installed devices, the items that are listed in this section may or may not be displayed. - Dell Inspiron 16 5645 | Owners Manual - Page 91
System setup options-Main menu Main System Time System Date BIOS Version Product Name Service Tag Asset Tag CPU Type CPU Speed CPU ID CPU Cache L1 Cache L2 BIOS version. Displays the model number of your computer. Displays the service tag of your computer. Displays the asset tag of your computer. - Dell Inspiron 16 5645 | Owners Manual - Page 92
Default: AHCI /NVMe Adapter Warnings Allows you to choose if the computer should display warning messages when you use AC adapters that are not supported by your computer. Default: Enabled Function Key Behavior Allows you to set function key or multimedia key as the default function key behavior - Dell Inspiron 16 5645 | Owners Manual - Page 93
Table 31. System setup options-Advanced menu (continued) Advanced BIOS Recovery from Hard Drive Enables the user to recover from certain corrupted BIOS conditions from a recovery file on the user primary hard drive or an external USB key. Default: Enabled BIOS Auto-Recovery Enables BIOS to - Dell Inspiron 16 5645 | Owners Manual - Page 94
TPM Module on the computer. Default: Enabled Enable Pre-Boot DMA support Enable or disable the pre-boot DMA support. Default: Enabled Enable OS kernel DMA support Enable or disable the OS kernel DMA support. Default: Enabled Secure Boot System Status: Secure Boot Database A security standard - Dell Inspiron 16 5645 | Owners Manual - Page 95
Table 32. System setup options-Security menu (continued) Security Default: Disabled Secure Boot Mode Prevents any malicious software from loading when computer starts up. Default: Deployed Mode User Customized Security Default: No Secure Boot Select Secure Mode Expert Key Management Custom - Dell Inspiron 16 5645 | Owners Manual - Page 96
support. In the Search support box, enter the Service Tag of your computer, and then click Search. NOTE: If you do not have the Service Tag, use the SupportAssist feature to automatically identify your computer. You can also use the product ID or manually the on-screen instructions to complete the - Dell Inspiron 16 5645 | Owners Manual - Page 97
option for your computer. If the option is listed, then the BIOS supports this BIOS update option. NOTE: Only computers with the BIOS Flash Update have to be bootable) ● BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB drive ● AC power adapter - Dell Inspiron 16 5645 | Owners Manual - Page 98
) and System passwords About this task To clear the computer or BIOS passwords, contact Dell technical support as described at Contact Support. For more information, go to Dell Support Site. NOTE: For information about how to reset Windows or application passwords, see the documentation accompanying - Dell Inspiron 16 5645 | Owners Manual - Page 99
relevant support resources for your Dell computer, we recommend entering the Service Tag or Express Service Code at Dell Support Site. For more information about how to find the Service Tag for your computer, see Instructions on how to find your Service Tag or Serial Number. Troubleshooting 99 - Dell Inspiron 16 5645 | Owners Manual - Page 100
the diagnostics accuracy of system board Embedded Controller (EC) failures. NOTE: M-BIST can be manually initiated before Power On Self-Test (POST). How to run M-BIST NOTE: M-BIST must was detected with the system board. b. AMBER: Amber indicates a problem with the system board. 100 Troubleshooting - Dell Inspiron 16 5645 | Owners Manual - Page 101
built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with the LCD (screen) of the Dell laptop or with the video card (GPU) and computer first, expecting a user intervention to confirm functionality of the LCD. Troubleshooting 101 - Dell Inspiron 16 5645 | Owners Manual - Page 102
Inspiron 16 5645. Table 37. System-diagnostic lights Blinking pattern Amber 1 White 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 3 2 3 3 3 4 3 5 3 6 3 7 Problem , it automatically starts Dell SupportAssist OS Recovery. 102 Troubleshooting - Dell Inspiron 16 5645 | Owners Manual - Page 103
to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures. For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at Serviceability Tools at the Dell Support Site - Dell Inspiron 16 5645 | Owners Manual - Page 104
: The battery is a Field Replaceable Unit (FRU) and the removal/installation is intended for authorized service technicians only. 5. Press and hold the power button for 20 seconds to drain the flea power. a hard reset, search in the Knowledge Base Resource at Dell Support Site. 104 Troubleshooting - Dell Inspiron 16 5645 | Owners Manual - Page 105
resources for your Dell Technologies computer, enter the Service Tag or Express Service Code at Dell Support Site. For more information about how to find the Service Tag for your computer, see Instructions on how to find your Service Tag or Serial Number. Dell Technologies knowledge base articles
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Inspiron 16 5645
Owner's Manual
Regulatory Model: P131F
Regulatory Type: P131F002
April 2024
Rev. A01