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Activity | Beeps | Possible Cause | Recommended Action | |
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Red Power LED flashes six | 6 | For systems with a graphics card: | ||
times, once every second, |
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| 1. | Reseat the graphics card. |
followed by a two second |
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pause. Beeps stop after fifth |
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| 2. | Replace the graphics card. |
iteration but LEDs continue |
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until problem is solved. |
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| 3. | Replace the system board. |
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| For systems with integrated graphics, replace | |
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| the system board. | |
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Red Power LED flashes | 7 | System board failure | Replace the system board. | |
seven times, once every |
| (ROM detected failure |
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second, followed by a two |
| prior to video). |
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second pause. Beeps stop |
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after fifth iteration but LEDs |
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continue until problem is |
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solved. |
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Red Power LED flashes eight | 8 | Invalid ROM based on | 1. | Reflash the system ROM with the latest |
times, once every second, |
| bad checksum. |
| BIOS image. |
followed by a two second |
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| 2. | Replace the system board. |
pause. Beeps stop after fifth |
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iteration but LEDs continue |
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until problem is solved. |
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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 |
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| power cord back in to the computer. |
pause. Beeps stop after fifth |
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| 2. | Replace the system board. |
iteration but LEDs continue |
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until problem is solved. |
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| 3. | Replace the processor. |
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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, |
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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 |
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| 2. | Once a bad card is identified, remove and |
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 | 11 | The current processor | 1. | Install a TXT capable processor. |
eleven times, once every |
| does not support a | 2. | Disable TXT in the Computer Setup (F10) |
second, followed by a two |
| feature previously | ||
second pause. Beeps stop |
| enabled on this system. |
| utility. |
after fifth iteration but LEDs |
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| 3. | Reinstall the original processor. |
continue until problem is |
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solved.
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 135