116 TroubleshootingLockups and Software ProblemsCAUTION: Before you begin any of the procedures in this section, follow thesafety instructions in the Product Information Guide.The computer does not startCH E C K T H E A C A D A P T E R — Ensure that the AC adapter is firmly connected tothe computer and to the electrical outlet.The computer stops respondingNOTICE: You might lose data if you are unable to perform an operating systemshutdown.TU R N T H E C O M P U T E R O F F — If you are unable to get a response by pressing akey on your keyboard or moving your mouse, press and hold the power buttonfor at least 8 to 10 seconds until the computer turns off, then restart yourcomputer.A program stops responding or crashes repeatedlyEN D T H E P R O G R A M —1 Press simultaneously.2 Click the Applications tab and select the program that is no longerresponding.3 Click End Task.NOTE: The chkdsk program may run when you restart the computer. Follow theinstructions on the screen.CH E C K T H E S O F T W A R E D O C U M E N T A T I O N — If necessary, uninstall and thenreinstall the program. Software usually includes installation instructions in itsdocumentation or on a floppy disk or CD.A program is designed for an earlier Microsoft® Windows® operatingsystemRU N T H E PR O G R A M C O M P A T I B I L I T Y WI Z A R D — Program compatibility is amode in Windows that lets you run programs written for earlier versions ofWindows. For more information, search for the keyword program compatibilitywizard in Windows Help and Support.
