It looks like you monitor is on it's way out, electronic componets can break down after time, it could be repaired but that could cost $50~90 and you can buy a 17" monitor new for under $100, so start saving your money for a new one. John
Monitor is a Dell P991, around 4 years old. System is a Dell Dimension 4100, Windows 2000, Nvidia GForce video card with 32 MB video RAM. I don't use a screen saver. I did have the power settings set to shut the monitor off after an hour of inactivity, but I've disabled that.
For a few months now, there has been an occasional popping sound coming from the monitor. Not often, maybe one pop a few times a week. Lately it's started doing other strange things. All of a sudden the screen will start to blink. Turning the monitor off and on again stops it. Once the blinking has occurred however, the screen edges need to be readjusted using the monitor's controls.
Can any of this behavior be caused by the video card? I've tried hooking the monitor up to our other computer (a laptop) but since the behavior is so sporadic I can't rule it out just because the monitor behaved while hooked to the laptop.
I'm pretty much resigned to the idea that the monitor is dying but I'd appreciate your thoughts.