HP Elite 8300 HP Compaq Business PC Maintenance and Service Guide Elite 8300 S - Page 266
Solving Power Problems, Table 10-2
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Solving Power Problems Common causes and solutions for power problems are listed in the following table. Table 10-2 Solving Power Problems Power supply shuts down intermittently. Cause Solution 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). Power supply will not turn on because of internal power supply fault. Contact an authorized service provider to replace the power supply. 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: A fan may be blocked or not turning. OR The heat sink is not properly attached to the processor. 1. Ensure that the computer air vents are not blocked and the processor cooling fan is running. 2. Open hood, press power button, and see if the processor fan spins. If the processor fan is not spinning, 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 heat sink/fan assembly. 4. Contact an authorized reseller or service provider. Solving Power Problems 255