I would suggest trying the steps you outlined again. This time watch for any warnings and/or informational messages. I will admit that I have used chntpw quite a bit and once in awhile I have to do the reset 3 or 4 times before it works. I never was able to track down a reason or common configuration. Once I had to take the hard drive out of the PC and put into another computer with a different IDE controller. There was something about that particular PC that caused me nothing but problems.