Well, I hope I can explain this well enough. For the last month my monitor has given off a high pitched noise randomly, though it usually only happened when the computer started up. Yesterday, I started up my computer like normal and when I got to the windows login screen, the entire screen was covered in green, blue and red pixels that went away after I logged in. Today, I started it up again and it occured yet again, except this time they didn't go away until I changed my resolution manually after logging in. I tried to take a picture with printscreen but when I paste those pictures everything in the picture is normal at the time of the "anomaly". The monitor is about 3 years old now, and besides that high pitched noise, I've never had problems with it until yesterday. My video card is 7 months old. (ATI 9800) Never had problems with it, the fan feels warm but nothing extreme, I've run 3dmark 05 and atitools looking for artifacts and nothing appeared except during 3d mark 05 when a test would finish the program sends you back to the windows screen in a different resolution and when it did that the "anomaly" appeared until it went back into the tests. Nothing is overclocked, my video card has the latest drivers which I upgraded to yesterday after I noticed the problem. Not sure what else to say, sorry for such a long post and I hope it makes enough sense for any helpful answers. Thanks, Mike

Try to lower the refresh rate. If that doesn't work it's sounds like you CRT is living it's last days. (that high pitch sounds trouble)

Well, as long as it isn't my video card that is semi-good news because I am pretty sure my warranty is extended to 5 years. I'll have to see what happens, thanks.

It's most likely the monitor. Video cards don't humm or make noises, but monitors can (transformers, etc)

My guess is the video card fan. Noise from a PC is a fan probably 98 times out of 100.

its got to be the screen because if he clicked print screen then pasted the image and it was normal it cannot be the graphics card

Noise could be video card fan but colored spots sure are the monitor on it's way out!