Home » HP Manuals » Desktops » HP 8100 » Manual Viewer

HP 8100 Maintenance and Service Guide: HP Compaq 8100 and 8180 Elite Business - Page 211

Solving Memory Problems

Add to My Manuals
Save this manual to your list of manuals

Page 211 highlights

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. Table E-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 DIMM1 socket. Memory module is not the correct type or speed grade for the system or the new memory module is not seated properly. Ensure that a memory module is installed in the black DIMM1 socket on the system board. DIMM1 must be installed before DIMM2, and DIMM3 must be installed before DIMM4. Replace module with the correct industry-standard device for the computer. On some models, ECC and non-ECC memory modules cannot be mixed. Out of memory error. Cause Memory configuration may not be set up correctly. You have run out of memory to run the application. Solution Use the Device Manager to check memory configuration. Check the application documentation to determine the memory requirements. Memory count during POST is wrong. Cause The memory modules may not be installed correctly. Integrated graphics may use system memory. Solution Check that the memory modules have been installed correctly and that proper modules are used. No action required. Solving Memory Problems 201

Section	Page
Product Features	11
Convertible Minitower Chassis	11
Front Panel Components	11
Rear Panel Components	12
Small Form Factor	13
Front Panel Components	13
Rear Panel Components	14
Installing and Customizing the Software	15
Installing the Windows Operating System	15
Downloading Microsoft Windows Updates	15
Installing or Upgrading Device Drivers (Windows systems)	16
Customizing the Monitor Display (Windows systems)	16
Launching Windows XP from Windows 7	16
Accessing Disk Image (ISO) Files	16
Computer Setup (F10) Utility	18
Computer Setup (F10) Utilities	18
Using Computer Setup (F10) Utilities	19
Computer Setup—File	20
Computer Setup—Storage	21
Computer Setup—Security	23
Computer Setup—Power	28
Computer Setup—Advanced	29
Recovering the Configuration Settings	32
Serial ATA (SATA) Drive Guidelines and Features	33
SATA Hard Drives	33
SATA Hard Drive Cables	33
SATA Data Cable	33
SMART ATA Drives	34
Hard Drive Capacities	34
Identifying the Chassis, Routine Care, and Disassembly Preparation	35
Chassis Designations	35
Convertible Minitower (CMT)	35
8100 Models	35
8180 Models	36
Small Form Factor (SFF)	36
Electrostatic Discharge Information	36
Generating Static	37
Preventing Electrostatic Damage to Equipment	37
Personal Grounding Methods and Equipment	38
Grounding the Work Area	38
Recommended Materials and Equipment	38
Operating Guidelines	39
Routine Care	39
General Cleaning Safety Precautions	40
Cleaning the Computer Case	40
Cleaning the Keyboard	40
Cleaning the Monitor	41
Cleaning the Mouse	41
Service Considerations	41
Power Supply Fan	41
Tools and Software Requirements	41
Screws	42
Cables and Connectors	42
Hard Drives	42
Lithium Coin Cell Battery	42
Removal and Replacement Procedures Convertible Minitower (CMT) Chassis	44
Serial Number Location	44
Preparation for Disassembly	45
Unlocking the Smart Cover Lock	46
Smart Cover FailSafe Key	46
Using the Smart Cover FailSafe Key to Remove the Smart Cover Lock	46
External Security Devices	47
Installing a Security Lock	47
HP/Kensington MicroSaver Security Cable Lock	48
Padlock	49
HP Business PC Security Lock	49
Front Bezel Security	51
Computer Access Panel	53
Front Bezel	54
Bezel Blanks	55
Cable Management	56
Cable Connections	57
Installing Additional Memory	58
DIMMs	58
DDR3-SDRAM DIMMs	58
Populating DIMM Sockets	59
Installing DIMMs	60
Expansion Cards	62
Drives	66
System Board Drive Connections	67
Drive Positions	68
Removing a Drive from a Drive Bay	69
Installing a 5.25-inch Drive into an External Drive Bay	73
Installing a 3.5-inch SATA Hard Drive into an Internal Drive Bay	75
Removing and Replacing a Removable 3.5-inch SATA Hard Drive	76
Hood Sensor	81
Hood Lock	82
Front I/O, USB Assembly	83
Power Switch Assembly	84
Speaker	85
Rear Chassis Fan	86
Heat sink	87
Processor	89
Power Supply	91
System Board	92
Battery	93
Type 1 Battery Holder	94
Type 2 Battery Holder	94
Changing from a Minitower to a Desktop Configuration	95
Changing from a Desktop to a MinitowerConfiguration	97
Removal and Replacement Procedures Small Form Factor (SFF) Chassis	100
Serial Number Location	100
Preparation for Disassembly	100
Unlocking the Smart Cover Lock	102
Smart Cover FailSafe Key	102
Using the Smart Cover FailSafe Key to Remove the Smart Cover Lock	102
External Security Devices	104
Installing a Security Lock	104
HP/Kensington MicroSaver Security Cable Lock	104
Padlock	105
HP Business PC Security Lock	105
Front Bezel Security	107
Computer Access Panel	109
Front Bezel	110
Bezel Blanks	111
Installing Additional Memory	112
DIMMs	112
DDR3-SDRAM DIMMs	112
Populating DIMM Sockets	113
Installing DIMMs	114
Expansion Cards	116
Cable Management	121
Cable Connections	122
Drives	122
Drive Positions	122
Installing and Removing Drives	123
System Board Drive Connections	124
Removing an External 5.25-inch Drive	125
Installing an Optical Drive into the 5.25-inch Drive Bay	127
Removing an External 3.5-inch Drive	129
Installing a Drive into the 3.5-inch External Drive Bay	131
Removing and Replacing the Primary 3.5-inch Internal SATA Hard Drive	133
Removing and Replacing a Removable 3.5-inch SATA Hard Drive	137
Baffle	141
Front Fan Assembly	142
Hood Sensor	143
Front I/O, Power Switch Assembly	144
Speaker	146
Heat sink	147
Processor	148
Power Supply	150
System Board	151
Battery	152
Type 1 Battery Holder	153
Type 2 Battery Holder	154
Using the Small Form Factor Computer in a Tower Orientation	154
Connector Pin Assignments	156
Keyboard	156
Mouse	156
Ethernet BNC	156
Ethernet RJ-45	157
Serial Interface, Powered and Non-Powered	157
USB	157
Microphone	158
Headphone	158
Line-in Audio	158
Line-out Audio	158
Monitor	159
DisplayPort	159
4-Pin Power (for CPU)	160
6-Pin Power (for CPU) (CMT, SFF)	160
SATA Data and Power	160
PCI Express	161
PCI Express	162
Power Cord Set Requirements	163
General Requirements	163
Japanese Power Cord Requirements	163
Country-Specific Requirements	164
Backup and Recovery	165
Windows 7 – Backup and Recovery	165
Backing up your information	165
Performing a recovery	166
Using the Windows recovery tools	167
Using F11	167
Using a Windows 7 operating system DVD (purchased separately)	168
Windows Vista – Backup and Recovery	169
Backing up your information	169
Performing a recovery	170
Using the Windows recovery tools	170
Using F11	171
Using a Windows Vista operating system DVD (purchased separately)	171
Computer Diagnostic Features	173
Hewlett-Packard Vision Diagnostics	173
Accessing HP Vision Diagnostics	173
Survey Tab	174
Test Tab	174
Status Tab	175
History Tab	176
Errors Tab	176
Help Tab	176
Saving and Printing Information in HP Vision Diagnostics	177
Downloading the Latest Version of HP Vision Diagnostics	177
Protecting the Software	178
Troubleshooting Without Diagnostics	179
Safety and Comfort	179
Before You Call for Technical Support	179
Helpful Hints	180
Solving General Problems	182
Solving Power Problems	186
Solving Diskette Problems	187
Solving Hard Drive Problems	190
Solving Media Card Reader Problems	193
Solving Display Problems	195
Solving Audio Problems	199
Solving Printer Problems	202
Solving Keyboard and Mouse Problems	203
Solving Hardware Installation Problems	205
Solving Network Problems	207
Solving Memory Problems	211
Solving Processor Problems	213
Solving CD-ROM and DVD Problems	214
Solving USB Flash Drive Problems	216
Solving Front Panel Component Problems	217
Solving Internet Access Problems	218
Solving Software Problems	221
Contacting Customer Support	222
POST Error Messages	223
POST Numeric Codes and Text Messages	224
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes	231
Password Security and Resetting CMOS	235
Resetting the Password Jumper	236
Clearing and Resetting the CMOS	237
Drive Protection System (DPS)	239
Accessing DPS Through Computer Setup	240
Specifications	241
CMT Specifications	241
SFF Specifications	243

Match case Limit results 1 per page

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.

Table E-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 DIMM1 socket.

Ensure that a memory module is installed in the black

DIMM1 socket on the system board. DIMM1 must be

installed before DIMM2, and DIMM3 must be installed before

DIMM4.

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.

Out of memory error.

Cause

Solution

Memory configuration may not be set up correctly.

Use the Device Manager to check memory configuration.

You have run out of memory to run the application.

Check the application documentation to determine the

memory requirements.

Memory count during POST is wrong.

Cause

Solution

The memory modules may not be installed correctly.

Check that the memory modules have been installed

correctly and that proper modules are used.

Integrated graphics may use system memory.

No action required.

Solving Memory Problems

201