Basic Troubleshooting
Solving Minor Problems (Continued)
Problem
Cause
Solution
Cannot remove
computer cover or
access panel.
Smart Cover Lock,
featured on some
computers, is locked.
Unlock the Smart Cover Lock using
Computer Setup (F10 Setup).
The Smart Cover FailSafe Key, a
device for manually disabling the
Smart Cover Lock, is available from
Compaq. Use the FailSafe Key in
case of a forgotten password, power
loss, or computer malfunction.
Cursor will not move
using the arrow keys on
the keypad.
The Num Lock key may
be on.
Press the Num Lock key. The Num
Lock light should not be on if you
want to use the arrow keys.
Blank monitor screen.
Monitor is not turned on
and the monitor light is
not on.
Turn on the monitor and check that
the monitor light is on.
The cable connections
are not correct.
Check the cable connection from the
monitor to the computer and to the
electrical outlet.
The energy saver feature
has been enabled.
Press any key or click the mouse
button and, if set, type your
password.
The RGB (Red, Green,
Blue) input switch on the
monitor is incorrectly set.
Set the monitor’s RGB input switch
to 75 ohms and, if there is a sync
switch, set it to external.
You are using a
fixed-sync monitor and it
will not sync at the
resolution chosen.
Be sure that the monitor can accept
the same sweep rate as the
resolution chosen.
The VGA/BNC selector
switch is not properly set.
Set the selector switch to agree with
the cable connection.
2-8
Getting Started
