Gateway E-4400 System Manual page 92

Probable Cause
The monitor is too close
to a source of electrical
interference.
The monitor needs to be
degaussed.
Solution
Move the monitor away from sources of
electrical interference, such as televisions,
unshielded speakers, microwave ovens,
fluorescent lights, and metal beams or shelves.
Turn off the computer and monitor and leave
them off for at least a half hour, then restart the
system.
Video problems
85