Solving Power Problems
Common causes and solutions for power problems are listed in the following table.
Table
Power supply shuts down intermittently.
Cause | Solution |
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Voltage selector switch on rear of computer chassis (some | Select the proper AC voltage using the selector switch. |
models) not switched to correct line voltage (115V or 230V). |
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Power supply will not turn on because of internal power | Contact an authorized service provider to replace the power |
supply fault. | supply. |
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Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause | Solution | ||
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Processor thermal protection activated: | 1. | Ensure that the computer air vents are not blocked and | |
A fan may be blocked or not turning. |
| the processor cooling fan is running. | |
2. | Open hood, press power button, and see if the | ||
OR | |||
| processor fan spins. If the processor fan is not spinning, | ||
The heat sink is not properly attached to the processor. |
| make sure the fan's cable is plugged onto the system | |
| board header. | ||
| 3. | If fan is plugged in, but is not spinning, then replace the | |
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| heat sink/fan assembly. | |
| 4. | Contact an authorized reseller or service provider. | |
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Solving Power Problems 255