Hello,My pc operates on vista Greatest Lately my pc was operating great, I turn laptop down and flipped it again on. The windows launching display was cornered. I continued to wait roughly 20 mins, before understanding that i may have a issue. I re-booted and tried again, no success what so ever. I then tried secure method and get cornered after crcdisk.sys continued to wait another 20 mins and unfortunately hadn't been effective. I had renewed vista again to the past again up. Still didn't work. Could someone please help me as i am anxious.