Table A-2 Diagnostic Front Panel LEDs and Audible Codes (continued)
Activity | Beeps | Possible Cause | Recommended Action | |
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Red Power LED flashes nine | 9 | System powers on but is | 1. | Unplug the AC power cord from the |
times, once every second, |
| unable to boot. |
| computer, wait 30 seconds, then plug the |
followed by a two second |
|
|
| power cord back in to the computer. |
pause. Beeps stop after fifth |
|
| 2. | Replace the system board. |
iteration but LEDs continue |
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| ||
until problem is solved. |
|
| 3. | Replace the processor. |
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| ||
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|
Red Power LED flashes ten | 10 | Bad option card. | 1. | Check each option card by removing the |
times, once every second, |
|
|
| card (one at a time if multiple cards), then |
followed by a two second |
|
|
| power on the system to see if fault goes |
pause. Beeps stop after fifth |
|
|
| away. |
iteration but LEDs continue |
|
| 2. | Once a bad card is identified, remove and |
until problem is solved. |
|
| ||
|
|
|
| replace the bad option card. |
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|
| 3. | Replace the system board. |
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|
|
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|
Red Power LED flashes | 11 | The current processor | 1. | Install a Trusted Execution Technology |
eleven times, once every |
| does not support a |
| (TXT) capable processor. |
second, followed by a two |
| feature previously | 2. | Disable TXT in the Computer Setup (F10) |
second pause. Beeps stop |
| enabled on this system. | ||
after fifth iteration but LEDs |
|
|
| utility. |
continue until problem is |
|
| 3. | Reinstall the original processor. |
solved. |
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| ||
|
|
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| |
System does not power on | None | System unable to power | Press and hold the power button for less than 4 | |
and LEDs are not flashing. |
| on. | seconds. If the hard drive LED turns green, the | |
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|
| power button is working correctly and the system | |
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|
| board needs to be replaced. | |
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|
| OR |
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|
| Press and hold the power button for less than 4 | |
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|
| seconds. If the hard drive LED does not turn on | |
|
|
| green then: | |
|
|
| 1. | Check that the unit is plugged into a |
|
|
|
| working AC outlet. |
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|
| 2. | Open hood and check that the power button |
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|
|
| harness is properly connected to the |
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| system board. |
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| 3. | Check that both power supply cables are |
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|
|
| properly connected to the system board. |
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|
| 4. | Check to see if the 5V_aux light on the |
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| system board is turned on. If it is turned on, |
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|
|
| then replace the power button harness. If |
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| the problem persists, replace the system |
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| board. |
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| 5. | If the 5V_aux light on the system board is |
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|
|
| not turned on, remove the expansion cards |
one at a time until the 5V_aux light on the system board turns on. It the problem persists, replace the power supply.
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 75
