Its this bit that suggested to me its a video card problem, and that it may well be on its last legs, especialy if the distortion happens starts when the computer posts (thats a sure sign either the card is seriously overheated, or damaged if it wont go away). If it distorts on post its definatly not driver issues (Drivers wont even have loaded by that point). Btw for those that dont know what "post" is relating to a computer, its the point when the computer first starts up, shows the bios information, counts ram, etc.