Activity | Beeps | Possible cause | Recommended action | |
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Red Power LED flashes eleven | 11 | The current processor does | 1. | Install a TXT capable processor. |
times, once every second, |
| not support a feature |
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followed by a two second |
| previously enabled on this | 2. | Disable TXT in the Computer Setup (F10) |
pause. Beeps stop after fifth |
| system. |
| utility. |
iteration but LEDs continue until |
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| 3. | Reinstall the original processor. |
problem is solved. |
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System does not power on and | None | System unable to power | Press and hold the power button for less than 4 | |
LEDs are not flashing. |
| on. | seconds. If the hard drive LED turns white, the | |
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| power button is working correctly. Try the | |
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| following: | |
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| 1. | Check that the voltage selector (some |
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| models), located on the rear of the power |
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| supply, is set to the appropriate voltage. |
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| Proper voltage setting depends on your |
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| region. |
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| 2. | Replace the system board. |
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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 | |
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| white then: | |
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| 1. | Check that the unit is plugged into a |
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| 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 system |
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| 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 the |
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| problem persists, replace the system 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 199
