7-4 Troubleshooting! Distorted image appears on the monitor screen.Adjust the monitorís video controls.If this does not help, turn the monitor off for several seconds, then back on.! There is constant movement on the screen.A magnetic field is affecting the monitor. Move any devices (fan, motor, another monitor)that generate magnetic fields away from the monitor.! The screen display is fuzzy or flickering; graphics characters or garbage appears onthe screen.Check that the monitor is set up correctly and that all connections are correct.Check that the video refresh rate and video driver are correct.Check display properties. Click the right mouse button anywhere on the Windows desktopand a menu appears. Click Properties and the Display Properties window appears.Keyboard/Mouse ProblemsCheck the following problem to see the possible cause and solution.! Mouse or keyboard does not respond.The mouse and keyboard might have been connected after turning on the system. Turn thesystem off, make sure the mouse and keyboard are connected, and turn the system back on.! Image appears on screen but nothing happens when using the mouse or keyboard.Make sure the keyboard or mouse cable is firmly connected to the rear of the system.If this does not help, turn off the system, wait five or more seconds, and turn on the system.! Mouse cursor moves erratically or not at all.Clean the mouse (see ìSection 6, ìPreventive Maintenanceî).If this does not help, the mouse might need to be replaced.CD-ROM Drive ProblemsCheck the following problems to see the possible cause and solution.! The system does not see the CD-ROM drive.The drive designation is wrong and should be changed. The drive designation for the drivedepends upon the storage device configuration in the system. To find out what drivedesignation letter is assigned to the drive, double click My Computer on the Windowsdesktop. The drive designation is below the drive icon.As an alternative, open Windows Explorer and scroll down the list of folders until youlocate the drive icon. The drive designation is next to the icon.! The CD-ROM drive is not reading a disc.Check that the disc is inserted in the CD tray with the printed label side up.Check that the disc is a data disc, not a music disc.Clean the non-label side of the disc with a soft lint-free cloth, gently rubbing from thecenter of the disc to the outer edge of the disc. Or use a commercial CD-ROM disc cleaner.Try a different CD to see if the problem is limited to one CD.
