Cause Solution
Processor is too hot. 1. Be sure that airow to the computer is not blocked. Leave a
10.2 cm (4 inch) clearance on all vented sides of the computer
to permit the required airow.
2. Be sure that fans are connected and working properly (some
fans only operate when needed).
3. Be sure that the processor heat sink is installed properly.
Hard drive is full. Transfer data from the hard drive to create more space on the hard
drive.
Low on memory. Add more memory.
Hard drive fragmented. Defragment hard drive.
Program previously accessed did not release reserved memory
back to the system.
Restart the computer.
Virus resident on the hard drive. Run virus protection program.
Too many applications running. 1. Close unnecessary applications to free memory.
2. Add more memory.
3. Some applications run in the background and can be closed by
right-clicking their corresponding icons in the task tray.
Some software applications, especially games, are stressful on the
graphics subsystem.
1. Lower the display resolution for the current application or
consult the documentation that came with the application for
suggestions on how to improve performance by adjusting
parameters in the application.
2. Add more memory.
3. Upgrade the graphics solution.
Cause unknown. Restart the computer.
Computer powered o automatically and the power light blinks red four times and then
white two times
Use this information to troubleshoot the computer.
Cause Solution
Processor thermal protection activated. A fan might be blocked or
not turning, or the heat sink is not properly attached to the
processor.
1. Be sure that the computer air vents are not blocked and the
processor cooling fan is running.
2. Open the access panel, press the power button, and see if the
processor fan (or other system fan) spins. If the fan does not
spin, be sure that the fan cable is plugged onto the system
board header.
3. If fan a plugged in and not spinning, replace it.
System does not turn on and the lights on the front of the computer are not blinking
Use this information to troubleshoot the computer.
ENWW Solving general problems 53
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