I have a Dell Dimension E520 that I purchased in 2006. It has a 19 in. LCD monitor. When not actively using
computer, it goes to screen saver after a certain time, then after a few minutes it goes black which is
normal. Recently it has gone to screen saver and then instead of going black, it starts to flashing different
colors. At this point you can not push the off button on the monitor and turn it off. Does anyone have any
Strange that it should suddenly start doing it. Have you tried the advice here?
Monitor cycles solid colors in Standby Mode