It does sound like it could be a driver issue.. I had this sort of thing happen to me once.. it turned out to be a chipset driver..
.. It could be a gpu problem too though.. what video card/driver are you using?
Which build of Windows 7 are you using? Did you do a clean install or an upgrade? Which app did you use to burn the ISO to DVD? All these questions could help lead us to the cause..
One final question, which motherboard do you have installed?