Video And Display Problems; If The Display Is Blank; If The Display Is Difficult To Read - Dell Inspiron 1720 Owner's Manual

Video and Display Problems

Fill out the "Diagnostics Checklist" on page 178 as you complete these
checks.
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.

If the display is blank

NOTE:
If you are using a program that requires a higher resolution than your
computer supports, it is recommended that you attach an external monitor to your
computer.
C H E C K T H E B A T T E R Y
battery charge may be depleted. Connect the computer to an electrical outlet
using the AC adapter, and then turn on the computer.
T E S T T H E E L E C T R I C A L O U T L E T
testing it with another device, such as a lamp.
H E C K T H E A D A P T E R
C A C
AC adapter has a light, ensure that the light is on.
O 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
C
protection devices, power strips, and extension cables to verify that the
computer turns on.
A D J U S T T H E P O W E R P R O P E R T I E S
Help and Support.
S W I T C H T H E V I D E O I M A G E
monitor, press <Fn><F8> to switch the video image to the display.

If the display is difficult to read

D J U S T T H E B R I G H T N E S S
A
M O V E T H E E X T E R N A L 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
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.
L 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
E
halogen lamps, or other appliances.
O T A T E T H E C O M P U 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
R
glare, which can cause poor picture quality.
If you are using a battery to power your computer, the
—
Ensure that the electrical outlet is working by
—
Check the AC adapter cable connections. If the
—
Search for the keyword sleep in Windows
—
If your computer is attached to an external
—
Press <Fn> and the up- or down-arrow key.
—
—
Turn off nearby fans, fluorescent lights,
—
Troubleshooting
Bypass power
—
—
Eliminate sunlight
If
125