![](/images/backgrounds/290989/hp-compaq-6000-pro-all-in-one-pc-service-and-maintain-141378115x1.png)
Table
Activity | Beeps | Possible Cause | Recommended Action | |
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Red Power LED flashes four | 4 | Power failure (power | 1. | Open the hood and ensure the 4 or |
times, once every second, |
| supply is overloaded). |
| power supply cable is seated into the |
followed by a two second |
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| connector on the system board. |
pause. Beeps stop after fifth |
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| 2. | Check if a device is causing the problem by |
iteration but LEDs continue until |
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problem is solved. |
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| removing ALL attached devices (such as |
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| hard, diskette, or optical drives, and |
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| expansion cards). Power on the system. If |
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| the system enters the POST, then power off |
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| and replace one device at a time and repeat |
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| this procedure until failure occurs. Replace |
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| the device that is causing the failure. |
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| Continue adding devices one at a time to |
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| ensure all devices are functioning properly. |
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| 3. | Replace the power supply. |
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| 4. | Replace the system board. |
Red Power LED flashes five | 5 |
times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.
CAUTION: To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module.
1.Reseat DIMMs.
2.Replace DIMMs one at a time to isolate the faulty module.
3.Replace
4.Replace the system board.
Red Power LED flashes six | 6 |
times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.
For systems with a graphics card: | ||
| 1. | Reseat the graphics card. |
| 2. | Replace the graphics card. |
| 3. | Replace the system board. |
For systems with integrated graphics, replace the system board.
Red Power LED flashes seven | 7 |
times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.
System board failure | Replace the system board. |
(ROM detected failure |
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prior to video). |
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Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 107