Dell 4150 owner manual If the display is difficult to read, Solving Problems

CH E C K T H E B A T T E R Y — If you are using a battery to power your computer, the battery charge may be depleted. Connect the computer to an electrical outlet using the 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 by testing 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 AC adapter has a light, ensure that it 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 power protection devices, power strips, and the extension cable to verify that the computer turns on.

AD J U S T T H E PO W E R PR O P E R T I E S — Your computer may be in standby or hibernate mode. For information on power management modes, see the Tell Me How help file, or search for the keyword standby or hibernate in the Windows XP Help and Support Center. To access help files, see page 56.

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.

If the display is difficult to read

AD J U S T T H E B R I G H T N E S S — See the Tell Me How help file for instructions on adjusting the brightness. To access the help file, see page 56.

MO V E T H E S U B W O O F E R A W A Y F R O M T H E C O M P U T E R O R M O N I T O R —

If your external speaker system includes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft) away from the computer or external monitor.

EL I M I N A T E P O S S I B L E I N T E R F E R E N C E — Turn off nearby fans, fluorescent lights, halogen lamps, or other appliances.

Solving Problems

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