7-4 TroubleshootingCheck that the diskette size is 1.44 MB.If the diskette drive busy lamp does not light when loading the diskette,try a different diskette. If this loads, the problem is in the software.! Non-System Disk or Disk Error message displayed.If trying to boot from the diskette drive, insert a diskette with system filesinto drive A.If a bootable diskette does not boot, use the Setup utility to verify that theinitial boot parameter is set to diskette drive A and not a hard drive.LCD Panel ProblemsCheck the following problems to see the possible cause and solution.! LCD panel screen is dark or the display is hard to read.Press the space bar or move the mouse to take the system out of thepower management mode.Check that system power is on.Check that the LCD panel brightness controls are correctly adjusted.Check that the AC adapter and power cable are connected together, theadapter is plugged into the back of the system unit, and the power cable isplugged into a live power source.! The screen display is fuzzy or flickering; graphics characters orgarbage appears on the screen.Check that all connections have been made.Check that the video refresh rate and video driver are correct.Check display properties. Click the right mouse button anywhere on theWindows desktop and a menu appears. Click Properties and the DisplayProperties 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 thesystem. Turn the system off, make sure the mouse and keyboard areconnected, and turn the system back on.! Image appears on screen but nothing happens when using themouse or keyboard.Make sure the keyboard or mouse cable is firmly connected to the rear ofthe system.