Compaq Presario 7400 Series Maintenance And Service Manual page 161

Compaq.com - Compaq Presario Maintenance and Service Guide - 7400 Series
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Problem Probable cause(s)
Characters The brightness control is
are dim. not set properly.
Screen is A screen-blanking utility
blank. could be installed.
The brightness needs
adjusting.
Screen save has been
initiated.
Garbled The ANSI.SYS driver is not
characters on in the CONFIG.SYS file.
the screen
are mixed
with text.
Monitor There is not enough
overheats. ventilation space for
proper airflow.
Cursor will The Num Lock key is on.
not move
using the
arrow keys
on the
numeric
keypad.
VGA Monitor
Possible solution
Adjust the brightness control.
Press any key. If the display
reappears, you have a
screen-blanking utility installed.
Adjust the brightness control.
Press any key or move the mouse
to light the screen.
Add the ANSI.SYS driver to the
CONFIG.SYS file by adding the
following line:
DEVICE = C:\ANSI.SYS
Leave at least 3 inches (7.6 cm) of
ventilation space. Also, be sure
there is nothing on top of the
monitor to obstruct air flow.
Press the Num Lock key. The
Num Lock light should not be on
when you want to use the arrow
keys.