Try sikvik's idea first. Let us know how it goes.
If that doesn't work, try this please:
1. Boot into Safe Mode
2. Go to Start > All Programs > Accessories > Command Prompt
3. Type in chkdsk /r
This should restore any missing/corrupt system drivers.
If you have trouble booting into Safe Mode or accessing the Command Prompt, follow these instructions to launch the Recovery Console and the Command Prompt:
1. Boot your computer from your Windows CD
2. Press the letter R
when it boots to proceed to the Windows Recovery Console
3. As you progress to the Recovery Console you may be asked which partition you would like to boot into. Type the number
associated with the partition containing your NTFS partition (usually 1 or 2) and then press Enter
4. In the command prompt type in chkdsk /r
Let me know how it goes.