![](/images/backgrounds/290989/hp-compaq-6000-pro-all-in-one-pc-service-and-maintain-141378116x1.png)
Table
Activity | Beeps | Possible Cause | Recommended Action | |
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Red Power LED flashes eight | 8 | Invalid ROM based on | 1. | Reflash the system ROM with the latest BIOS |
times, once every second, |
| bad checksum. |
| image. |
followed by a two second |
|
| 2. | Replace the system board. |
pause. Beeps stop after fifth |
|
|
iteration but LEDs continue until problem is solved.
Red Power LED flashes nine | 9 |
times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.
System powers on but is unable to boot.
1.Unplug the AC power cord from the computer, wait 30 seconds, then plug the power cord back in to the computer.
2.Replace the system board.
3.Replace the processor.
Red Power LED flashes ten | 10 | Bad option card. | 1. | Check each option card by removing the |
times, once every second, |
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|
| card (one at a time if multiple cards), then |
followed by a two second |
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| power on the system to see if fault goes |
pause. Beeps stop after fifth |
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| away. |
iteration but LEDs continue until |
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| 2. | Once a bad card is identified, remove and |
problem is solved. |
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| ||
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| replace the bad option card. |
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| 3. | Replace the system board. |
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108 Appendix A POST Error Messages