Alright, that problem happpened to me once when I was upgrading from NT to NT with SP3. I hope you made your emergency start up disk. If you use that in conjunction with your original NT CD it should be able to rectify the problem. I don't recall all the steps that I went through but it was pretty simple and was up running again with virtually no down time. Try it. I hope it works. ** Everything happened pretty much on its own. An old file was installed or a missing on and it started up again. **