Solving Power Problems
Common causes and solutions for power problems are listed in the following table.
Table 8-2 Solving Power Problems
Power supply shuts down intermittently.
Cause | Solution |
|
|
If equipped with a voltage selector, voltage selector switch on | Select the proper AC voltage using the selector switch. |
rear of computer chassis (some models) not switched to |
|
correct line voltage (115V or 230V). |
|
|
|
Power supply will not turn on because of internal power | Replace the power supply. |
supply fault. |
|
|
|
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 | |
|
|
|
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. |
|
| |
OR | 2. | Open the access panel, press the power button, and see |
| if the processor fan (or other system fan) spins. If the fan | |
The heat sink is not properly attached to the processor. |
| does not spin, make sure the fan cable is plugged onto |
| the system board header. | |
|
| |
| 3. | If fan a plugged in and not spinning, replace it. |
|
|
|
Solving Power Problems 147
