When I first installed my shiny new IBM 80GB in to my PII 450 machine, it went bananas! I needed a controller card to run it properly but thats a different matter! The drive kept on becoming corrupt and I kept having to run scandisk, finxing the severe disk errors and then copying files from the old hard drive (which was on its last limb).
I seemed to fix it by disabling the write cache, and I believe the reason was that the system was shutting down far too fast for the hard disk to cope with, so it lost power early. I believe this causes two problems:
1. The heads don't 'park', which I've been told is very bad!
2. The data in the cache is not written to disk, or even better, it is and its just all dumped at once in the same place. Yey. <sarcasm>
I could be wrong but thats the reason for the write cache message.
As for win2k, well, its win2k, get XP Pro and see if that helps, if not you're likely looking at hardware problems (graphics card?)