Table
Activity | Beeps | Possible Cause | Recommended Action | |
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Red Power LED flashes four | 4 | Power failure (power | 1. | Ensure the DC power cable is plugged into |
times, once every second, |
| supply is overloaded). |
| the I/O panel. |
followed by a two second |
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| 2. | Check if a device is causing the problem by |
pause. Beeps stop after fifth |
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iteration but LEDs continue |
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| removing ALL attached devices (such as a |
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| hard drive). Power on the system. If the | |
until problem is solved. |
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| system enters the POST, then power off | |
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| and replace the device to see if the problem |
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| is resolved. |
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| 3. | Replace the power supply. |
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| 4. | Replace the system board. |
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Red Power LED flashes five | 5 | CAUTION: To avoid damage to the SODIMMs | ||
times, once every second, |
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| or the system board, you must unplug the | |
followed by a two second |
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| computer power cord before attempting to | |
pause. Beeps stop after fifth |
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| reseat, install, or remove a SODIMM module. | |
iteration but LEDs continue |
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| 1. | Reseat SODIMMs. |
until problem is solved. |
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| 2. | Replace SODIMMs one at a time to isolate |
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| the faulty module. |
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| 3. | Replace |
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| memory. |
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| 4. | Replace the system board. |
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Red Power LED flashes six | 6 | 1. | Unplug the power cord. Press the CMOS | |
times, once every second, |
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| reset button. Install the FDO jumper to |
followed by a two second |
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| disable ME (or remove the FDO jumper to |
pause. Beeps stop after fifth |
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| disable ME if it was installed). |
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 | 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. | Replace the processor. |
times, once every second, |
| unable to boot. | 2. | Replace the system board. |
followed by a two second |
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pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 63