Windows Loading and Mup.sys problem

My computer froze last night while I was using it. Now when I try to restart it, it won't load windows. The computer posts fine and the bios recognizes all the drives and roms but won't start windows. I tried booting in safe mode, but the process hangs with this line: multi(0)disk(0)rdisk(0)partition(1)\windows\system32\drivers\mup.sys I tried booting straight from the winxp cd and doing a repair, which did not work. I have tried to run chkdsk /p /r with no success. Any help would be appreciated.

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