Dell Latitude D531 (Mid 2007) - Manual (Page 98)

98 Troubleshooting
If the display is difficult to read
A D J U ST TH E B R I G H T N E S S — Press <Fn> and the up- or down-arrow key.
M OVE T H E E X TE R N A L SU B WO O FE R AWA Y F RO M T H E C O M PU T E R O R M O N I TO 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.
E
L I M I N A TE PO S S I B L E I N T E RF ER E N C E — Turn off nearby fans, fluorescent lights, halogen lamps, or other
appliances.
R
O T A T E TH E C O M PU T E R T O F A C E A D I F F E R E N T D I R E C T I O N — Eliminate sunlight glare, which can cause poor
picture quality.
A
D J U ST TH E W INDO WS D I S P L A Y S E T T I N G S
1 Click Start→ Control Panel→ Appearance and Themes.
2 Click the area you want to change or click the Display icon.
3 Try different settings for Color quality and Screen resolution.
R U N TH E V I D E O D I A G N O S T I C S T E ST S — 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 (see "Dell Diagnostics" on
page 79). Then contact Dell (see "Contacting Dell" on page 138 ).
S E E "E R RO R M E S SA G E S " — If an error message appears, see "Error Messages" on page 86.
If only part of the display is readable
C O N N E C T A N E X T E RN A L M O N I T O R
1 Shut down your computer and connect an external monitor to the computer.
2 Turn on the computer and the monitor and 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 138).