HP Pro 3005 Maintenance & Service Guide: HP Pro 3005/3015/3085 Business PC - Page 116

Solving Hardware Installation Problems continued

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Table C-10 Solving Hardware Installation Problems (continued) The computer emits one short beep then one long beep followed by a three second pause. Cause Solution Memory is installed incorrectly or is bad. CAUTION: 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. 1. Reseat DIMMs. Power on the system. 2. Replace DIMMs one at a time to isolate the faulty module. NOTE: DIMM2 must always be installed. 3. Replace third-party memory with HP memory. 4. Replace the system board. The computer emits two short beeps then one long beep followed by a three second pause. Cause Solution Graphics card is not seated properly or is bad, or system board is bad. For systems with a graphics card: 1. Reseat the graphics card. Power on the system. 2. Replace the graphics card. 3. Replace the system board. For systems with integrated graphics, replace the system board. 108 Appendix C Troubleshooting Without Diagnostics

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The computer emits one short beep then one long beep followed by a three second pause.
Cause
Solution
Memory is installed incorrectly or is bad.
CAUTION:
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.
1.
Reseat DIMMs. Power on the system.
2.
Replace DIMMs one at a time to isolate the faulty
module.
NOTE:
DIMM2 must always be installed.
3.
Replace third-party memory with HP memory.
4.
Replace the system board.
The computer emits two short beeps then one long beep followed by a three second pause.
Cause
Solution
Graphics card is not seated properly or is bad, or system
board is bad.
For systems with a graphics card:
1.
Reseat the graphics card. Power on the system.
2.
Replace the graphics card.
3.
Replace the system board.
For systems with integrated graphics, replace the system
board.
Table C-10
Solving Hardware Installation Problems (continued)
108
Appendix C
Troubleshooting Without Diagnostics