Despite your dismissing my genuine attempt to offer a possibility (plus some lame humour thrown in), I'm going to persevere.
It may help us all if you first filled out you system specs so stuff like GPU/CPU/Drivers
might give us some clues.
I have had something like this happen to me and I very much doubt it has anything to do with your windows install. Is it just happening just in some programs?, have you tried the great Microsoft fix (re-boot!), are your video card drivers up-to-date and designed for Windows 7, mouse drivers?), did this effect happen as soon as you installed - or did it appear later, install anything just before the problem arose? (try a system restore) ~ in other words - more information please!