CRT image geometry is distorted
Use automatic screensaver
Low color depth. Images appear blocky grainy
Calibrate color to output device
stuck or dead pixel
check or replace cabling
image burn-in creating ghosted elements
adjust screen resolution or zoom
color burn-in creating ghosted elements
adjust resolution or zoom
color glitches, purple or green horizontal lines
adjust brightness or contrast
screen objects appear too large
Ensure display is plugged and connected
image appears very dim
adjust image control knobs
artwork color output different than displays
check display driver
no image displayed
replace display adapter
unexpected STOP errors at startup
try to reactivate using software