Last night, I noticed my computer was freezing every few minutes. I decided to reboot, and Windows told me that my NTOSKRNL.EXE was corrupted. I deleted it, copied it from another machine over the network, and sure enough, more files were corrupted. I was finally able to do a CHKDSK /F on the drive to fix the errors and my computer booted. This morning, the errors re-appeared. I fixed them and all throughout the day my computer has been fine, until now. It has started to freeze again, so I do a CHKDSK to see if anything is wrong and I see this: What should I do? Would a format help, or is it a problem with the physical drive?