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HP ProDesk 480 G7 PCI Micro Maintenance and Service Guide - Page 105

POST numeric codes and text messages

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Table 7-1 POST numeric codes and text messages (continued) Control panel message Description Recommended action 219-ECC Memory Module Detected ECC Modules not supported on this Platform Recently added memory modules support ECC memory error correction. 1. If additional memory was recently added, remove it to see if the problem remains. 2. Check product documentation for memory support information. 301-Keyboard Error Keyboard failure. 1. Reconnect keyboard with computer turned off. 2. Check connector for bent or missing pins. 3. Be sure that none of the keys are depressed. 4. Replace keyboard. 303-Keyboard Controller Error I/O board keyboard controller. 1. Reconnect keyboard with computer turned off. 2. Replace the system board. 304-Keyboard or System Unit Error Keyboard failure. 1. Reconnect the keyboard with computer turned off. 2. Be sure that none of the keys are depressed. 3. Replace the keyboard. 4. Replace the system board. 501-Display Adapter Failure Graphics display controller. 1. Clear CMOS. 2. Verify that the monitor is attached and turned on. 510-Flash Screen Image Corrupted Flash Screen image has errors. Reflash the system ROM with the latest BIOS image. 512-Chassis, Rear Chassis, or Front Chassis Fan is not connected or might have Fan not Detected malfunctioned. 1. Reseat fan. 2. Reseat fan cable. 3. Replace fan. 514-CPU or Chassis Fan not Detected Fan is not connected or might have malfunctioned. 1. Reseat fan. 2. Reseat fan cable. 3. Replace fan. 660-Display cache is detected unreliable Integrated graphics controller display cache Replace system board if minimal graphics is not working properly and will be disabled. degrading is an issue. 1720-SMART Hard Drive Detects Imminent Failure Hard drive will soon fail. (Some hard drives 1. have a hard drive firmware patch that will fix an erroneous error message.) Determine if hard drive is giving correct error message. Run the Drive Protection System test under Using F2 ENWW POST numeric codes and text messages 97

Section	Page
Product features	9
Standard configuration features	9
Front panel components	9
Rear panel components	10
Serial number location	11
Illustrated parts catalog	13
Computer major components	13
Mass storage devices	15
Cables	16
Miscellaneous parts	17
Routine care, SATA drive guidelines, and disassembly preparation	19
Electrostatic discharge information	20
Generating static electricity	20
Preventing electrostatic damage to equipment	21
Personal grounding methods and equipment	21
Grounding the work area	21
Recommended materials and equipment	22
Operating guidelines	22
Routine care	24
General cleaning safety precautions	24
Removing dirt and debris from your computer	24
Cleaning your computer with a disinfectant	25
Cleaning the computer case	25
Cleaning the keyboard	26
Cleaning the monitor	26
Cleaning the mouse	26
Service considerations	27
Tools and software requirements	27
Screws	27
Cables and connectors	27
Hard drives	27
Lithium coin cell battery	28
SATA hard drives	28
Cable management	29
Removal and replacement procedures	31
Preparation for disassembly	31
Access panel	31
Optical drive	32
Front bezel	33
Optical drive cage	34
2.5 inch hard drive	35
3.5 inch primary hard drive	36
Memory modules (DIMMs)	41
Expansion card	44
Solid-state drive	45
WLAN module	47
Speaker	49
Fan	49
Battery	50
Heat sink	52
Processor	54
Power supply	55
Wireless antennas (select models only)	57
System board	59
System board callouts	59
Troubleshooting without diagnostics	61
Before you call for technical support	61
Helpful hints	62
Solving general problems	63
Cannot access the Computer Setup (F10) Utility when booting the computer	63
Computer appears locked up and will not turn off when the power button is pressed	63
Computer will not respond to keyboard or mouse	63
Computer date and time display is incorrect	63
There is no sound or sound volume is too low	64
Cannot remove computer cover or access panel	64
Poor performance	64
Computer powered off automatically and the power light blinks red four times and then white two time ...	65
System does not turn on and the lights on the front of the computer are not blinking	65
Solving power problems	67
Power supply shuts down intermittently	67
Computer turned off automatically, power light blinks red two times followed by a two-second pause, ...	67
Power light blinks red four times followed by a two-second pause and the computer beeps four times ( ...	67
Solving hard drive problems	69
Hard drive error occurs	69
Disk transaction problem	69
Drive not found (identified)	69
Nonsystem disk/NTLDR missing message	69
Computer will not boot from hard drive	70
Computer seems to be locked up	70
Solving audio problems	71
Sound cuts in and out	71
Sound does not come out of the speaker or headphones	71
Computer appears to be locked up while recording audio	71
Line-in jack is not functioning properly	72
Solving printer problems	73
Printer will not print	73
Printer will not turn on	73
Printer prints garbled information	73
Printer will not print	73
Solving keyboard and mouse problems	75
Keyboard commands and typing are not recognized by the computer	75
Mouse does not respond to movement or is too slow	75
Solving hardware installation problems	76
A new device is not recognized as part of the system	76
Computer will not start	76
Power light blinks red three times and then white two times	77
Solving network problems	78
Network driver does not detect network controller	78
Network status link light never blinks	78
Diagnostics reports a failure	78
Diagnostics passes, but the computer does not communicate with the network	79
Network controller stopped working when an expansion board was added to the computer	79
Network controller stops working without apparent cause	79
Cannot connect to network server when attempting remote system installation	79
System setup utility reports unprogrammed EEPROM	80
Solving memory problems	81
System will not boot or does not function properly after installing additional memory modules	81
Out of memory error	81
Memory count during POST is wrong	81
Insufficient memory error during operation.	82
Power light blinks red five times followed by a two-second pause and the computer beeps five times ( ...	82
Solving USB flash drive problems	83
USB flash drive is not seen as a drive letter in Windows	83
USB flash drive not found (identified)	83
System will not boot from USB flash drive	83
The computer boots to DOS after making a bootable flash drive	83
Solving internet access problems	84
Unable to connect to the internet	84
Cannot automatically launch internet programs	84
Solving software problems	85
Computer will not start up and the HP logo does not appear	85
“Illegal Operation has Occurred” error message is displayed	85
Computer Setup (F10) Utility	87
Using Computer Setup (F10) Utilities	87
Computer Setup—Main	88
Computer Setup—Security	91
Computer Setup—Advanced	95
POST error messages	103
POST numeric codes and text messages	103
Interpreting POST diagnostic front panel lights and audible codes	107
Password security and resetting CMOS	111
Changing a setup or power-on password	111
Deleting a setup or power-on password	112
Backing up, restoring, and recovering	113
Backing up information and creating recovery media	114
Using Windows tools for backing up	114
Using the HP Cloud Recovery Download Tool to create recovery media (select products only)	114
Restoring and recovering your system	115
Creating a system restore	115
Restoring and recovery methods	115
Recovering using HP Recovery media	115
Changing the computer boot order	116
Using HP Sure Recover (select products only)	116
Using HP PC Hardware Diagnostics	117
Downloading the HP PC Hardware Diagnostics Windows from the Microsoft Store	117
Customizing Remote HP PC Hardware Diagnostics UEFI settings	117
Statement of memory volatility	119
Current BIOS steps	119
Nonvolatile memory usage	121
Questions and answers	123
Using HP Sure Start (select products only)	125
Power cord set requirements	127
General requirements	127
Japanese power cord requirements	127
Country-specific requirements	127
Specifications	129