I'm running xp media center edition on my laptop, with automatic windows update. All was well yesterday, and the computer shut down normally. This morning I tried to boot up, and almost immediately it gave me a missing/corrupted file error message (sorry, can't remember the exact file). Using an xp CD from another of my computers (which only has SP1 on it), I was able to expand that missing/corrupted file and restart. Restart gave me another missing/corrupted file (again, didn't write it down, just corrected it by expanding from the xp CD). Restarted, it said I had missing/corrupted system32\drivers\isapnp.sys file. Expanded, corrected, restarted. Then it says missing/corrupted system32\drivers\ntfs.sys. This one, apparently, you copy instead of expand. So, I renamed the corrupted (ntfs.old) and copied. Restarted. Got the same missing/corrupted message. Tried copying several more times, and it did ask if I wanted to overwrite (and I could see the file where it was supposed to be when I ran a "dir" command), and I did. Still giving me same missing/corrupted error. c:\windows shows that 5 files were amended late last night (10.10pm): bootstat.dat, brownie.ini, wiadebug.log, wiasrvc.log and windowsupdate.log. Earlier in the day, win.ini and wmsetup.log were amended (but not consciously by me). I thought maybe the ntfs.sys on the CD was too old, so I tried to copy it from my tower computer, but it denied me access (a whole other problem I don't want to deal with right now).
Any thoughts on where to go from here????