I've been having a problem with my PC recently. Firstly, when playing a game (morrowind), it froze, then the PC restarted without even a blue screen. Then, when I went into things like Nero, the computer frooze when checking the IDE. I noticed that, although both my CD drives were empty, one still said it had the MOrrowind CD in it. So I did the following:
1. Took off one of my two CD drives - still had problems
2. Reconnected the CD drive and took the other one off - still had problems
3. Took both CD drives off (both on secondary IDE cable) - no problems
4. Used a different IDE cable for the secondary IDE cable - had problems
5. Put one of the CD drives on the primary IDE cable with the hard drive - no problems
From this, I think it is either Windows that has gone wrong (haven't installed anything recently) or the motherboard. Any suggestions?