Quick Reference Guide 29Lockups 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 start upEN S U R E T H A T T H E P O W E R C A B L E I S F I R M L Y C O N N E C T E D T O T H E C O M P U T E R A N D T OT H E E L E C T R I C A L O U T L E TThe computer stops respondingNOTICE: You may 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 a key onyour keyboard or moving your mouse, press and hold the power button for at least 8 to10 seconds (until the computer turns off), and then restart your computer.A program stops respondingEN D T H E P R O G R A M —1 Press simultaneously to access the Task Manager.2 Click the Applications tab.3 Click to select the program that is no longer responding.4 Click End Task.A program crashes repeatedlyNOTE: Most software includes installation instructions in its documentation or on afloppy disk, CD, or DVD.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 then reinstallthe program.A program is designed for an earlier Windows operating systemRU N T H E PR O G R A M CO M P A T I B I L I T Y WI Z A R D —Windows XP:The Program Compatibility Wizard configures a program so that it runs in anenvironment similar to non-XP operating system environments.1 Click Start→ All Programs→ Accessories→ Program Compatibility Wizard→ Next.2 Follow the instructions on the screen.