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Interpreting POST Diagnostic Front Panel LEDs and Audible Codes

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Table C-1 Numeric Codes and Text Messages (continued) Control panel message Description Parity Check 2 Parity RAM failure. System will not boot without fan CPU fan not installed or disconnected in VSFF chassis. Recommended action Run Computer Setup and Diagnostic utilities. 1. Remove the computer cover, press the power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan's cable is plugged onto the system board header. Ensure the heatsink is properly seated and installed. 2. If the fan is plugged in and the heatsink is properly seated but the fan does not spin, then replace the heatsink-fan assembly. Interpreting POST Diagnostic Front Panel LEDs and Audible Codes This section covers the front panel LED codes as well as the audible codes that may occur before or during POST that do not necessarily have an error code or text message associated with them. WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching. NOTE: If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the computer and refer to the following table to determine the front panel LED codes. Recommended actions in the following table are listed in the order in which they should be performed. Not all diagnostic lights and audible codes are available on all models. Table C-2 Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Green Power LED On. Green Power LED flashes every two seconds. None None Red Power LED flashes two 2 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Computer on. None Computer in Suspend to RAM mode (some models only) or normal Suspend mode. None required. Press any key or move the mouse to wake the computer. Processor thermal 1. protection activated: A fan may be blocked or not turning. 2. OR The heatsink/fan assembly is not properly 3. attached to the processor. Ensure that the computer air vents are not blocked and the processor cooling fan is running. Open hood, press power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan's cable is plugged onto the system board header. If fan is plugged in, but is not spinning, then replace heatsink/fan assembly. 4. Contact an authorized reseller or service provider. 212 Appendix C POST Error Messages

Section	Page
Installing and Customizing the Software	13
Installing the Operating System	13
Installing or Upgrading Device Drivers	13
HP Backup and Recovery Manager	14
Computer Setup (F10) Utility	15
Computer Setup (F10) Utilities	15
Using Computer Setup (F10) Utilities	16
Computer Setup—File	17
Computer Setup—Storage	18
Computer Setup—Security	20
Computer Setup—Power	23
Computer Setup—Advanced	24
Recovering the Configuration Settings	26
Computer Diagnostic Features	27
HP Insight Diagnostics	27
Accessing HP Insight Diagnostics	27
Survey Tab	28
Test Tab	29
Status Tab	29
Log Tab	30
Help Tab	30
Saving and Printing Information in HP Insight Diagnostics	31
Downloading the Latest Version of HP Insight Diagnostics	31
Protecting the Software	31
HP Backup and Recovery Manager	32
Desktop Management	33
Initial Configuration and Deployment	33
HP OpenView Agent	34
Altiris Deployment Solution Agent	34
Verdiem Surveyor Client Side Installation	35
Remote System Installation	35
Software Updating and Management	36
HP Client Management Interface	36
HP System Software Manager	37
HP Client Manager	37
HP ProtectTools Security Manager	38
HP Client Premium Suite	39
HP Client Foundation Suite	39
HP OpenView Client Configuration Manager	39
HP OpenView PC Configuration Management Solution	40
HP Client Catalog for SMS	40
HP Backup and Recovery Manager	40
Intel vPro-branded PCs with Active Management Technology	41
HP Proactive Change Notification	43
Subscriber’s Choice	43
Retired Solutions	43
ROM Flash	43
Remote ROM Flash	44
HPQFlash	44
Boot Block Emergency Recovery Mode	44
Replicating the Setup	45
Copying to Single Computer	45
Copying to Multiple Computers	46
Creating a Bootable Device	47
Supported USB Flash Media Device	47
Unsupported USB Flash Media Device	48
Dual-State Power Button	49
HP Web Site Support	50
Industry Standards	50
Asset Tracking and Security	50
Password Security	53
Establishing a Setup Password Using Computer Setup	53
Establishing a Power-On Password Using Computer Setup	53
Entering a Power-On Password	53
Entering a Setup Password	54
Changing a Power-On or Setup Password	54
Deleting a Power-On or Setup Password	55
National Keyboard Delimiter Characters	55
Clearing Passwords	55
DriveLock	56
Using DriveLock	56
DriveLock Applications	56
Smart Cover Sensor	57
Setting the Smart Cover Sensor Protection Level	57
Smart Cover Lock	57
Locking the Smart Cover Lock	58
Unlocking the Smart Cover Lock	58
Using the Smart Cover FailSafe Key	58
Cable Lock Provision	59
Fingerprint Identification Technology	59
Fault Notification and Recovery	59
Drive Protection System	59
Surge-Tolerant Power Supply	59
Thermal Sensor	59
Serial and Parallel ATA Drive Guidelines and Features	60
SATA Hard Drives	60
SATA Hard Drive Cables	61
SATA Data Cable	61
SATA Power Cable	61
PATA Device Information	62
ATA SMART Drives	62
Hard Drive Capacities	62
Identifying the Chassis, Routine Care, and Disassembly Preparation	63
Chassis Designations	63
Convertible Minitower (CMT)	63
Small Form Factor (SFF)	64
Ultra-Slim Desktop (USDT)	64
Electrostatic Discharge Information	65
Generating Static	65
Preventing Electrostatic Damage to Equipment	65
Personal Grounding Methods and Equipment	66
Grounding the Work Area	66
Recommended Materials and Equipment	66
Operating Guidelines	67
Routine Care	68
General Cleaning Safety Precautions	68
Cleaning the Computer Case	68
Cleaning the Keyboard	68
Cleaning the Monitor	69
Cleaning the Mouse	69
Service Considerations	69
Power Supply Fan	69
Tools and Software Requirements	69
Screws	70
Cables and Connectors	70
Hard Drives	70
Lithium Coin Cell Battery	71
Removal and Replacement Procedures Convertible Minitower (CMT) Chassis	72
Preparation for Disassembly	72
Unlocking the Smart Cover Lock	73
External Security Devices	74
Installing a Cable Lock	74
Installing a Padlock	74
Hood Sensor	75
Computer Access Panel	76
Front Bezel	77
Bezel Blanks	78
Cable Management	79
Cable Connections	80
Memory	81
Expansion Cards	84
Drives	88
System Board Drive Connections	90
Drive Positions	91
Installing a 3.5-inch Hard Drive into an Internal Drive Bay	92
Removing and Replacing a Removable 3.5-inch SATA Hard Drive	94
Installing a 5.25-inch or 3.5-inch Drive into an External Drive Bay	99
ReadyBoost Card	101
Front I/O Device and Power Switch	102
Fan Shroud	103
Heatsink	104
Processor	105
Speaker	106
Rear Chassis Fan	107
Inner Chassis Fan	108
Serial Port	109
Power Supply	110
System Board	111
Battery	112
Type 1 Battery Holder	113
Type 2 Battery Holder	113
Type 3 Battery Holder	114
Changing from a Desktop to a Minitower Configuration	115
Changing from a Minitower to a Desktop Configuration	117
Removal and Replacement Procedures Small Form Factor (SFF) Chassis	119
Preparation for Disassembly	119
Unlocking the Smart Cover Lock	120
Smart Cover FailSafe Key	120
Using the Smart Cover FailSafe Key to Remove the Smart Cover Lock	121
External Security Devices	122
Installing a Security Lock	122
Cable Lock	122
Padlock	122
HP Business PC Security Lock	123
Computer Access Panel	125
Front Bezel	126
Bezel Blanks	127
Installing Additional Memory	128
DIMMs	128
DDR2-SDRAM DIMMs	128
Populating DIMM Sockets	129
Installing DIMMs	130
Expansion Cards	132
Cable Management	136
Cable Connections	137
Drives	138
Drive Positions	138
Installing and Removing Drives	139
System Board Drive Connections	141
Removing an Optical Drive	142
Installing an Optical Drive into the 5.25-inch Drive Bay	143
Removing an External 3.5-inch Drive	146
Installing a Drive into the 3.5-inch External Drive Bay	148
Primary 3.5-inch Internal SATA Hard Drive	150
Removable 3.5-inch SATA Hard Drive	152
ReadyBoost Card	156
Fan Shroud	157
Chassis Fan	158
Power Switch Assembly	159
Front I/O Device	160
Heatsink	161
Processor	162
Speaker	163
Power Supply	164
System Board	165
Backwall	167
Battery	168
Type 1 Battery Holder	169
Type 2 Battery Holder	169
Type 3 Battery Holder	170
Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis	171
Preparation for Disassembly	171
External Security Devices	172
Cable Lock	172
HP Business PC Security Lock	173
Computer Access Panel	175
Front Bezel	176
Bezel Blanks	177
Memory	178
SODIMMs	178
DDR2-SDRAM SODIMMs	178
Populating SODIMM Sockets	179
Installing SODIMMs	179
Cable Management	181
Cable Connections	182
Optical Drive	182
Removing the Optical Drive	182
Preparing a New Optical Drive	183
Installing a New Optical Drive	184
Optical Drive Connector	185
Hard Drive	186
Hard Drive Cage	190
Port Cover	191
ReadyBoost Card	192
Fan	193
Speaker	194
I/O Panel	195
Heatsink	196
Processor	198
System Board	199
Rear Chassis Fan	200
Battery	201
Connector Pin Assignments	203
Keyboard	203
Mouse	203
Ethernet BNC	203
Ethernet RJ-45	204
Ethernet AUI	204
Parallel Interface	205
Serial Interface, Powered and Non-Powered	205
USB	206
Microphone	206
Headphone	206
Line-in Audio	206
Line-out Audio	206
External Infrared Transceiver	207
Monitor	207
ATA/ATAPI (IDE) Standard Drive Cable	208
CD-ROM 50-Pin Connector	209
24-Pin Power	209
24-Pin MicroFit Power (CMT, SFF)	210
4-Pin Power (for CPU)	210
6-Pin Power (for CPU) (CMT, SFF)	210
SATA Data and Power	211
PCI Express	211
PCI Express	212
PCI Express Mini Card	213
DVI Connector	214
Power Cord Set Requirements	215
General Requirements	215
Japanese Power Cord Requirements	215
Country-Specific Requirements	216
POST Error Messages	217
POST Numeric Codes and Text Messages	218
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes	224
Troubleshooting Without Diagnostics	228
Safety and Comfort	228
Before You Call for Technical Support	228
Helpful Hints	229
Solving General Problems	231
Solving Power Problems	234
Solving Diskette Problems	235
Solving Hard Drive Problems	238
Solving Media Card Reader Problems	240
Solving Display Problems	242
Solving Audio Problems	245
Solving Printer Problems	247
Solving Keyboard and Mouse Problems	248
Solving Hardware Installation Problems	249
Solving Network Problems	251
Solving Memory Problems	254
Solving Processor Problems	256
Solving CD-ROM and DVD Problems	256
Solving Drive Key Problems	259
Solving Front Panel Component Problems	259
Solving Internet Access Problems	260
Solving Software Problems	262
Contacting Customer Support	263
System Board and Riser Board Reference Designators	264

Match case Limit results 1 per page

Control panel message

Description

Recommended action

Parity Check 2

Parity RAM failure.

Run Computer Setup and Diagnostic utilities.

System will not boot without fan

CPU fan not installed or disconnected in

VSFF chassis.

Remove the computer cover, press the

power button, and see if the processor

fan spins. If the processor fan is not

spinning, make sure the fan's cable is

plugged onto the system board header.

Ensure the heatsink is properly seated

and installed.

If the fan is plugged in and the heatsink

is properly seated but the fan does not

spin, then replace the heatsink-fan

assembly.

Interpreting POST Diagnostic Front Panel LEDs and

Audible Codes

This section covers the front panel LED codes as well as the audible codes that may occur before or

during POST that do not necessarily have an error code or text message associated with them.

WARNING!

When the computer is plugged into an AC power source, voltage is always applied to the

system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure

to disconnect the power cord from the wall outlet and allow the internal system components to cool

before touching.

NOTE:

If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the

computer and refer to the following table to determine the front panel LED codes.

Recommended actions in the following table are listed in the order in which they should be performed.

Not all diagnostic lights and audible codes are available on all models.

Table C-2

Diagnostic Front Panel LEDs and Audible Codes

Activity

Beeps

Possible Cause

Recommended Action

Green Power LED On.

None

Computer on.

None

Green Power LED flashes

every two seconds.

None

Computer in Suspend to

RAM mode (some models

only) or normal Suspend

mode.

None required. Press any key or move the mouse

to wake the computer.

Red Power LED flashes two

times, once every second,

followed by a two second

pause. Beeps stop after fifth

iteration but LEDs continue

until problem is solved.

Processor thermal

protection activated:

A fan may be blocked or

not turning.

The heatsink/fan

assembly is not properly

attached to the processor.

Ensure that the computer air vents are not

blocked and the processor cooling fan is

running.

Open hood, press power button, and see if

the processor fan spins. If the processor fan

is not spinning, make sure the fan's cable is

plugged onto the system board header.

If fan is plugged in, but is not spinning, then

replace heatsink/fan assembly.

Contact an authorized reseller or service

provider.

Table C-1

Numeric Codes and Text Messages (continued)

212

Appendix C

POST Error Messages