7-8 Troubleshooting
Problems and Solutions
Problem Symptom Solution
Keyboard or
mouse
malfunction
Monitor has prompt, but
cannot input data using
keyboard or mouse.
1. Check keyboard/mouse plugged in.
2. Clean mouse
3. Check password (see Section 2).
4. Disable password (see Section 2).
5. Replace keyboard (or mouse).
6. Replace system board.
Monitor
malfunction Unable to synchronize
display. 1. Adjust the monitor’s synchronization controls.
2. Check that the monitor’s resolution matches
the video setting or the video driver used.
3. Check that the utility is not selecting a refresh
rate/resolution that is not supported by the monitor.
4. Check that the driver used matches the
capabilities of the video controller and DRAM.
Wavy display. 1. Check that the system and monitor are not
near motors or electric fields.
Blank display. 1. Press any key or move the mouse to ensure
power management has not blanked the display.
2. Check that the monitor power On/Off switch is
On.
3. Adjust brightness and contrast controls on the
monitor.
4. Check that the monitor cable is attached to
the video connector at the back of the system.
5. Check cable connections between the AC
power supply and monitor.
6. Replace monitor.
CD-ROM drive
malfunction System power not on. 1. Turn system power on.
Disc tray does not open. 1. System power not on. Turn system power on.
2. System power failed. Insert the end of a
straightened paper clip into the emergency eject
hole, then gently press inward until the tray opens.