My son has a homemade comp. has a intell 2.66 quad process, gigabite motherbioard, 4 gig ram and two HD's with a pny GTX 9800+ graphics card. He updated the driver for his graphics card and now when he rebooted it is in a constant loop. I have tried to boot from a disk, Zip drive and nothing works. Any ideas would be great I have more info if needed
I beleave if his computer did not fully boot into windows you should be able to do this during the boot sequence tap the f8 key this will enable you to boot into safe mode or Last known good. I would try last known good first this should take you back to the point where windows succesfully booted if this does not work try going into safe mode and go into device manager and roll back the driver for the video card. Good luck