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Compaq dx7500 Service Reference Guide: HP Compaq dx7500 Business PC - Page 182

Solving Memory Problems

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Table C-12 Solving Network Problems (continued) Network controller stops working without apparent cause. Cause Solution 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- Install a working, industry-standard NIC, or change the boot standard specifications. 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. 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. 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. Table C-13 Solving Memory Problems System will not boot or does not function properly after installing additional memory modules. Cause Solution A memory module is not installed in the XMM1 (or DIMM1) socket. Ensure that a memory module is installed in the blue XMM1 (or DIMM1) socket on the system board. This socket must be populated with a memory module. Memory module is not the correct type or speed grade for the Replace module with the correct industry-standard device for system or the new memory module is not seated properly. the computer. On some models, ECC and non-ECC memory modules cannot be mixed. 172 Appendix C Troubleshooting Without Diagnostics

Section	Page
Installing and Customizing the Software	11
Installing the Operating System	11
Installing or Upgrading Device Drivers	11
HP Backup and Recovery Manager	11
Computer Setup (F10) Utility	13
Computer Setup (F10) Utilities	13
Using Computer Setup (F10) Utilities	13
Computer Setup—Main	14
Computer Setup—Advanced	15
Computer Setup—Power	16
Computer Setup—Boot	17
Computer Setup—Exit	17
Recovering the Configuration Settings	18
Computer Diagnostic Features	19
HP Insight Diagnostics	19
Accessing HP Insight Diagnostics	19
Survey Tab	20
Test Tab	21
Status Tab	21
Log Tab	22
Help Tab	22
Saving and Printing Information in HP Insight Diagnostics	23
Downloading the Latest Version of HP Insight Diagnostics	23
Protecting the Software	23
HP Backup and Recovery Manager	24
Desktop Management	25
Initial Configuration and Deployment	25
HP Software Agent	26
Altiris Deployment Solution Agent	26
Remote System Installation	27
Software Updating and Management	27
HP Client Management Interface	27
HP SoftPaq Download Manager	28
HP System Software Manager	28
HP ProtectTools Security Manager	29
HP Client Automation Starter and Standard Editions	29
HP Client Automation Enterprise Edition	30
HP Client Manager from Symantec	30
Altiris Client Management Suite	31
HP Client Catalog for Microsoft System Center & SMS Products	31
HP Backup and Recovery Manager	31
Verdiem Surveyor	32
HP Proactive Change Notification	32
Subscriber’s Choice	32
Retired Solutions	33
ROM Flash	33
Remote ROM Flash	33
HPQFlash	33
Boot Block Emergency Recovery Mode	33
Replicating the Setup	34
Copying to Single Computer	34
Copying to Multiple Computers	35
Creating a Bootable Device	36
Supported USB Flash Media Device	36
Unsupported USB Flash Media Device	37
Dual-State Power Button	39
HP Web Site Support	39
Industry Standards	40
Asset Tracking and Security	40
Password Security	41
Establishing a Supervisor Password Using Computer Setup	41
Entering a Supervisor Password or User password	42
Changing a Supervisor or User password	42
Deleting a Supervisor or User Password	43
National Keyboard Delimiter Characters	43
Clearing Passwords	43
Cable Lock Provision	44
Fault Notification and Recovery	44
Drive Protection System	44
Surge-Tolerant Power Supply	44
Thermal Sensor	44
Serial ATA (SATA) Drive Guidelines and Features	45
SATA Hard Drives	45
SATA Hard Drive Cables	45
SATA Data Cable	45
SMART ATA Drives	46
Hard Drive Capacities	46
Identifying the Chassis, Routine Care, and Disassembly Preparation	47
Chassis Designations	47
Microtower (MT)	47
Small Form Factor (SFF)	48
Electrostatic Discharge Information	48
Generating Static	48
Preventing Electrostatic Damage to Equipment	49
Personal Grounding Methods and Equipment	49
Grounding the Work Area	50
Recommended Materials and Equipment	50
Operating Guidelines	51
Routine Care	52
General Cleaning Safety Precautions	52
Cleaning the Computer Case	52
Cleaning the Keyboard	52
Cleaning the Monitor	53
Cleaning the Mouse	53
Service Considerations	53
Power Supply Fan	53
Tools and Software Requirements	53
Screws	54
Cables and Connectors	54
Hard Drives	54
Lithium Coin Cell Battery	54
Removal and Replacement Procedures Microtower (MT) Chassis	56
Serial Number Location	56
Preparation for Disassembly	57
Access Panel	58
Front Bezel	59
Bezel Blanks	60
Memory	61
DDR2-SDRAM DIMMs	61
Populating DIMM Sockets	62
Installing Memory Modules	63
Expansion Cards	65
Cable Management	69
Cable Connections	71
Drives	72
Drive Positions	72
Installing Additional Drives	73
System Board Drive Connections	74
Removing an Optical Drive	75
Installing an Optical Drive into the 5.25-inch Drive Bay	76
Removing an External 3.5-inch Drive	78
Installing a Drive into the 3.5-inch External Drive Bay	80
Removing an Internal 3.5-inch Hard Drive	81
Installing an Internal 3.5-inch Hard Drive	84
Front I/O and USB Panel Housing Assembly	87
Power Switch/LED Assembly	88
Speaker	89
System Fan	90
Heatsink assembly	91
Processor	92
Power Supply	93
System Board	94
Battery	95
Type 1 Battery Holder	96
Type 2 Battery Holder	96
Type 3 Battery Holder	97
Installing a Security Lock	98
Cable Lock	98
Padlock	98
HP Business PC Security Lock	99
Removal and Replacement Procedures Small Form Factor (SFF) Chassis	101
Preparation for Disassembly	101
Access Panel	102
Front Bezel	103
Bezel Blanks	104
Cable Management	105
Cable Connections	106
Drives	107
Drive Positions	107
Installing Additional Drives	108
System Board Drive Connections	110
Removing an Optical Drive	111
Installing an Optical Drive into the 5.25-inch Drive Bay	113
Removing an External 3.5-inch Drive	115
Installing a Drive into the 3.5-inch External Drive Bay	118
Removing an Internal 3.5-inch Hard Drive	121
Installing an Internal 3.5-inch Hard Drive	123
Memory	125
DDR2-SDRAM DIMMs	125
Populating DIMM Sockets	126
Installing DIMMs	127
Removing or Installing an Expansion Card	130
Plastic Wire/Cable Fastener and Clips	135
Front I/O Device	136
Power Switch Assembly	137
Speaker	138
Heatsink	139
Processor	140
Power Supply	141
System Board	142
Battery	144
Type 1 Battery Holder	145
Type 2 Battery Holder	145
Type 3 Battery Holder	146
Installing a Security Lock	147
Cable Lock	147
Padlock	147
HP Business PC Security Lock	148
Connector Pin Assignments	150
Keyboard	150
Mouse	150
USB	151
Microphone	151
Headphone	151
Line-in Audio	151
Line-out Audio	151
Monitor	152
24-Pin Power	152
PCI Express	153
PCI Express	154
4-Pin Power (for CPU)	155
DVI Connector	155
SPDIF	155
Power Cord Set Requirements	156
General Requirements	156
Japanese Power Cord Requirements	156
Country-Specific Requirements	157
Troubleshooting Without Diagnostics	158
Safety and Comfort	158
Before You Call for Technical Support	158
Helpful Hints	159
Solving General Problems	161
Solving Power Problems	164
Solving Diskette Problems	165
Solving Hard Drive Problems	167
Solving Media Card Reader Problems	169
Solving Display Problems	170
Solving Audio Problems	174
Solving Printer Problems	175
Solving Keyboard and Mouse Problems	176
Solving Hardware Installation Problems	178
Solving Network Problems	180
Solving Memory Problems	182
Solving CD-ROM and DVD Problems	183
Solving USB Flash Drive Problems	185
Solving Front Panel Component Problems	186
Solving Internet Access Problems	187
Solving Software Problems	189
Interpreting POST Audible Codes	190
Resetting the Password Jumper	191
Resetting the CMOS Jumper	192
Contacting Customer Support	193
Specifications	194
Minitower	194
Small Form Factor	195

Match case Limit results 1 per page

Network controller stops working without apparent cause.

Cause

Solution

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. 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.

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.

Table C-13

Solving Memory Problems

System will not boot or does not function properly after installing additional memory modules.

Cause

Solution

A memory module is not installed in the XMM1 (or DIMM1)

socket.

Ensure that a memory module is installed in the blue XMM1

(or DIMM1) socket on the system board. This socket must be

populated with a memory module.

Memory module is not the correct type or speed grade for the

system or the new memory module is not seated properly.

Replace module with the correct industry-standard device for

the computer. On some models, ECC and non-ECC memory

modules cannot be mixed.

Table C-12

Solving Network Problems (continued)

172

Appendix C

Troubleshooting Without Diagnostics