This started about a week ago, when I started the pc, my desktop, wallpaper, taskbar were all surrounded by red green blue orange or purble pixels, that were flashing, i.e. appearing and disappearing at various places, like a winamp visualation :P. I managed to get over it by using an all-white screen saver and giving the monitor sometime off.
However, today the problem is still persisting, and even if I get over it it is only for a few minutes - then the corruption returns. I tried putting the monitor on VGA instead of DVI, changed some settings, refresh rates, reducing brightness but nothing particularly helped. Please help. Thanks.