Gateway E1400 System Manual page 110

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 for at least
a half hour, then restart the system.
Video problems
103