Sorry I forgot that D: may also be your CD ROM drive. Do you mean the drive the you put CDs in? in any case, still need to know what your PC is and a better decription of the problem.
Terry
August 2006
Not sure what you are trying to do. Normally the Operating System (Windows) goes on the first Hard drive (your C: Drive). D: could be a real second drive or a virtual drive on your 'C:' drive. So are you trying to find data that you kept on D: drive or reinstall your system on your C: drive. I suggest a new post with an exact description of what went wrong and what happens when you switch on.
Terry
August 2006
Automatic Answer
We may have found other answers which could help you.