Dell Vostro 220 Service Manual - Page 23

then try using the keyboard. R U N T H E H A R D W A R E TR O U B L E S H O O T E R - See "Hardware Troubleshooter" on page 12. Lockups and Software Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. The computer does not start up C H E C K T H E D I A G N O S T I C L I G H T S - See "Power Lights" on page 9. ENSURE THAT THE POWER CABLE IS FIRMLY CONNECTED TO THE COMPUTER AND TO THE ELECTRICAL OUTLET The computer stops responding NOTICE: You may lose data if you are unable to perform an operating system shutdown. 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 on your keyboard or moving your mouse, press and hold the power button for at least 8 to 10 seconds (until the computer turns off), and then restart your computer. A program stops responding END THE PROGRAM - 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 repeatedly NOTE: Most software includes installation instructions in its documentation or on a CD or DVD. C H 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 reinstall the program. Troubleshooting 23