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HP Pro 3405 HP Pro 3400 Microtower PC, HP Pro 3405 Microtower PC, HP Pro 3410 - Page 177

Solving Memory Problems, For those systems that support ECC memory

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Network controller stops working without apparent cause. Cause Solution The files containing the network drivers are corrupted. Reinstall the network drivers, using the Recovery Disc Set created from the hard drive's Recovery Partition. The cable is not securely connected. Ensure that the cable is securely attached to the network connector and that the other end of the cable is securely attached to the correct device. The network controller is defective. Contact an authorized service provider. New network card will not boot. Cause New network card may be defective or may not meet industry-standard specifications. Solution Install a working, industry-standard NIC, or change the boot sequence to boot from another source. Cannot connect to network server when attempting Remote System Installation. Cause Solution The network controller is not configured properly. Verify Network Connectivity, that a DHCP Server is present, and that the Remote System Installation Server contains the NIC drivers for your NIC. System setup utility reports unprogrammed EEPROM. Cause Unprogrammed EEPROM. Solution Contact an authorized service provider. Solving Memory Problems If you encounter memory problems, some common causes and solutions are listed in the following table. CAUTION: Power may still be supplied to the DIMMs when the computer is turned off (depending on the Management Engine (ME) settings). To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module. For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the computer will not boot the operating system. NOTE: The memory count will be affected by configurations with the Management Engine (ME) enabled. The ME uses 8MB of system memory in single channel mode or 16MB of memory in dualchannel mode to download, decompress, and execute the ME firmware for Out-of-Band (OOB), thirdparty data storage, and other management functions. Solving Memory Problems 167

Section	Page
Product Features	11
Feature Overview	11
Microtower Components	13
Small Form Factor Components	14
Installing and Customizing the Software	15
Installing the Operating System	15
Downloading Microsoft Windows Updates	15
Installing or Upgrading Device Drivers (Windows systems)	16
Accessing Disk Image (ISO) Files	16
Protecting the Software	16
Computer Setup (F10) Utility	17
Computer Setup (F10) Utilities	17
Using Computer Setup (F10) Utilities	18
Computer Setup—File	19
Computer Setup—Storage	20
Computer Setup—Security	22
Computer Setup—Power	25
Computer Setup—Advanced	26
Recovering the Configuration Settings	27
Illustrated parts catalog	28
Microtower Chassis Spare Parts	28
Computer Major Components	28
Cables	31
Misc Parts	32
Drives	33
Misc Boards	33
Sequential Part Number Listing	34
Small Form Factor (SFF) Chassis Spare Parts	36
Computer major components	36
Cables	38
Misc Parts	39
Drives	40
Misc Boards	40
Sequential Part Number Listing	40
Serial ATA (SATA) Drive Guidelines and Features	43
SATA Hard Drives	43
SATA Hard Drive Cables	43
SATA Data Cable	43
SMART ATA Drives	44
Hard Drive Capacities	44
Routine Care and Disassembly Preparation	45
Electrostatic Discharge Information	45
Generating Static	45
Preventing Electrostatic Damage to Equipment	46
Personal Grounding Methods and Equipment	46
Grounding the Work Area	47
Recommended Materials and Equipment	47
Operating Guidelines	48
Routine Care	48
General Cleaning Safety Precautions	48
Cleaning the Computer Case	48
Cleaning the Keyboard	49
Cleaning the Monitor	49
Cleaning the Mouse	50
Service Considerations	50
Power Supply Fan	50
Tools and Software Requirements	50
Screws	50
Cables and Connectors	51
Hard Drives	51
Lithium Coin Cell Battery	51
Removal and Replacement Procedures – Microtower Chassis	52
Serviceability Features	52
Preparation for Disassembly	52
Access Panel	53
Front Bezel	54
Memory	55
DDR3-SDRAM DIMMs	55
Populating DIMM Sockets	56
Removing Memory Modules	57
Expansion Cards	59
Cable Management	65
Cable Connections	66
Drives	67
Installing Additional Drives	68
System Board Drive Connections	69
Removing an Optical Drive	71
Removing a Hard Drive	71
Front I/O and USB Panel Housing Assembly	73
Power Switch/LED Assembly	76
System Fan	78
Fan Sink Assembly	80
Processor	81
Power Supply	85
System Board	86
Battery	87
Removal and Replacement Procedures – Small Form Factor (SFF) Chassis	89
Preparation for Disassembly	89
Access Panel	90
Front Bezel	92
Memory	93
DDR3-SDRAM DIMMs	93
Populating DIMM Sockets	94
Removing DIMMs	95
Expansion Card	98
Cable Management	102
Cable Connections	103
Drives	104
Drive Positions	104
Removing Drives	105
Removing an Optical Drive	105
Removing the Hard Drive	107
Power Switch	111
Front USB Assembly	113
Fan Assembly	116
Fan Sink	118
Processor	120
Power Supply	122
System Board	124
Battery	126
Connector Pin Assignments	128
Ethernet BNC	128
USB	128
Microphone	128
Headphone	129
Line-in Audio	129
Line-out Audio	129
4-Pin Power (for CPU)	129
Monitor	130
Serial Interface, Powered and Non-Powered	130
DVI Connector	131
24-Pin Power	132
PCI Express	133
PCI Express	134
Power Cord Set Requirements	135
General Requirements	135
Japanese Power Cord Requirements	135
Country-Specific Requirements	136
POST Error Messages	137
POST Numeric Codes and Text Messages	138
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes	146
Troubleshooting Without Diagnostics	150
Safety and Comfort	150
Before You Call for Technical Support	150
Helpful Hints	151
Solving General Problems	153
Solving Power Problems	156
Solving Diskette Problems	157
Solving Hard Drive Problems	159
Solving Media Card Reader Problems	162
Solving Display Problems	163
Solving Audio Problems	168
Solving Printer Problems	170
Solving Keyboard and Mouse Problems	171
Solving Hardware Installation Problems	173
Solving Network Problems	175
Solving Memory Problems	177
Solving Processor Problems	179
Solving CD-ROM and DVD Problems	179
Solving USB Flash Drive Problems	181
Solving Front Panel Component Problems	182
Solving Internet Access Problems	183
Solving Software Problems	185
Contacting Customer Support	186
Password Security and Resetting CMOS	187
Resetting the Password Jumper	188
Clearing and Resetting the CMOS	188
Backup and Recovery	190
Windows 7 – Backup and Recovery	190
Backing Up Your Information	190
Performing a Recovery	192
Using the Windows Recovery Tools	192
Using F11	193
Using a Windows 7 Operating System DVD (purchased separately)	193
Specifications	195
MT Specifications	195
SFF Specifications	196

Match case Limit results 1 per page

Network controller stops working without apparent cause.

Cause

Solution

The files containing the network drivers are corrupted.

Reinstall the network drivers, using the Recovery Disc Set

created from the hard drive's Recovery Partition.

The cable is not securely connected.

Ensure that the cable is securely attached to the network

connector and that the other end of the cable is securely

attached to the correct device.

The network controller is defective.

Contact an authorized service provider.

New network card will not boot.

Cause

Solution

New network card may be defective or may not meet

industry-standard specifications.

Install a working, industry-standard NIC, or change the boot

sequence to boot from another source.

Cannot connect to network server when attempting Remote System Installation.

Cause

Solution

The network controller is not configured properly.

Verify Network Connectivity, that a DHCP Server is present,

and that the Remote System Installation Server contains the

NIC drivers for your NIC.

System setup utility reports unprogrammed EEPROM.

Cause

Solution

Unprogrammed EEPROM.

Contact an authorized service provider.

Solving Memory Problems

If you encounter memory problems, some common causes and solutions are listed in the following

table.

CAUTION:

Power may still be supplied to the DIMMs when the computer is turned off (depending

on the Management Engine (ME) settings). To avoid damage to the DIMMs or the system board, you

must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module.

For those systems that support ECC memory, HP does not support mixing ECC and non-ECC

memory. Otherwise, the computer will not boot the operating system.

NOTE:

The memory count will be affected by configurations with the Management Engine (ME)

enabled. The ME uses 8MB of system memory in single channel mode or 16MB of memory in dual-

channel mode to download, decompress, and execute the ME firmware for Out-of-Band (OOB), third-

party data storage, and other management functions.

Solving Memory Problems

167