Dell Inspiron 1420 (Mid 2007) - Manual (Page 120)

120
Troubleshooting
A DJUST THE POWER PROPERTIES — Search for the keyword sleep in Windows
Help and Support.
S WITCH THE VIDEO IMAGE — 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
A DJUST THE BRIGHTNESS — Press and the up- or down-arrow key.
M OVE THE EXTERNAL SUBWOOFER AWAY FROM THE COMPUTER OR MONITOR — 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.
E LIMINATE POSSIBLE INTERFERENCE — Turn off nearby fans, fluorescent lights,
halogen lamps, or other appliances.
R OTATE THE COMPUTER TO FACE A DIFFERENT DIRECTION — Eliminate sunlight
glare, which can cause poor picture quality.
A DJUST THE W INDOWS DISPLAY SETTINGS —
1 Click Start → Control Panel → Appearance and Personalization →
Personalization → Display Settings.
2 Click the area you want to change or click the Display icon.
Try different settings for Resolution and Colors.
R UN THE V IDEO DIAGNOSTICS TESTS — If no error message appears and you
still have a display problem, but the display is not completely blank, run the
Video device group in the "Dell Diagnostics" on page 93, then contact Dell
(see "Contacting Dell" on page 166).
S EE " E RROR M ESSAGES " — If an error message appears, see "Error Messages"
on page 102.
If only part of the display is readable
C ONNECT AN EXTERNAL MONITOR —
1 Shut down your computer and connect an external monitor to the
computer.
2 Turn on the computer and the monitor, and then adjust the monitor
brightness and contrast controls.
If the external monitor works, the computer display or video controller
may be defective. Contact Dell (see "Contacting Dell" on page 166).