120 Troubleshootingprogram lists the correct device for the pointing device option. (The computerautomatically recognizes a USB mouse without making any setting adjustments.) Formore information on using the system setup program, see "System Setup Program" onpage 123.TE S T T H E M O U S E C O N T R O L L E R — To test the mouse controller (which affectspointer movement) and the operation of the touch pad or mouse buttons, run theMouse test in the Pointing Devices test group in the Dell Diagnostics (see "DellDiagnostics" on page 103).RE I N S T A L L T H E T O U C H P A D D R I V E R — See "Reinstalling Drivers and Utilities" onpage 128.Video and Display ProblemsCAUTION: Before you begin any of the procedures in this section, follow thesafety instructions in the Product Information Guide.The display is blankNOTE: For troubleshooting procedures, see the monitor’s documentation.If the display is blankNOTE: If you are using a program that requires a higher resolution than yourcomputer supports, it is recommended that you attach an external monitor to yourcomputer.CH E C K T H E B A T T E R Y — If you are using a battery to power your computer, thebattery charge may be depleted. Connect the computer to an electrical outlet usingthe AC adapter, and turn on the computer.TE S T T H E E L E C T R I C A L O U T L E T — Ensure that the electrical outlet is working bytesting it with another device, such as a lamp.CH E C K T H E AC A D A P T E R — Check the AC adapter cable connections. If the ACadapter has a light, ensure that the light is on.CO N N E C T T H E C O M P U T E R D I R E C T L Y T O A N E L E C T R I C A L O U T L E T — Bypass powerprotection devices, power strips, and the extension cable to verify that the computerturns on.AD J U S T T H E P O W E R P R O P E R T I E S — Search for the keyword standby in WindowsHelp and Support (see "Windows Help and Support" on page 18).SW I T C H T H E V I D E O I M A G E — If your computer is attached to an external monitor,press to switch the video image to the display.
