Table
Activity | Beeps | Possible Cause | Recommended Action | |
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Red Power LED flashes eight | 8 | Invalid ROM based on bad | 1. | Reflash the system ROM with the latest BIOS |
times, once every second, |
| checksum. |
| image. See the “Boot Block Emergency |
followed by a two second |
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| Recovery Mode” section of the Desktop |
pause. Beeps stop after fifth |
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| Management Guide for more information. |
iteration but LEDs continue |
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| 2. | Replace the system board. |
until problem is solved. |
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Red Power LED flashes nine | 9 | System powers on but is | 1. | Check that the voltage selector, located on |
times, once every second, |
| unable to boot. |
| the rear of the power supply (some models), |
followed by a two second |
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| is set to the appropriate voltage. Proper |
pause. Beeps stop after fifth |
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| voltage setting depends on your region. |
iteration but LEDs continue |
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| 2. | Unplug the AC power cord from the |
until problem is solved. |
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| computer, wait 30 seconds, then plug the |
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| power cord back in to the computer. |
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| 3. | Replace the system board. |
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| 4. | Replace the processor. |
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Red Power LED flashes ten | 10 | Bad option card. | 1. | Check each option card by removing the card |
times, once every second, |
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| (one at a time if multiple cards), then power |
followed by a two second |
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| on the system to see if fault goes away. |
pause. Beeps stop after fifth |
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| 2. | Once a bad card is identified, remove and |
iteration but LEDs continue |
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until problem is solved. |
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| replace the bad option card. |
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| 3. | Replace the system board. |
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Red Power LED flashes eleven | 11 | The current processor | 1. | Install a TXT capable processor. |
times, once every second, |
| does not support a feature | 2. | Disable TXT in the Computer Setup (F10) |
followed by a two second |
| previously enabled on this | ||
pause. Beeps stop after fifth |
| system. |
| utility. |
iteration but LEDs continue |
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| 3. | Reinstall the original processor. |
until 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 green, 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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| green then: | |
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| 1. | Check that the unit is plugged into a working |
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| 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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ENWW | Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 59 |