Hi again EeferNet!!
Can you try to start your computer, and keep tapping F8 button which will bring you the Advanced Boot Options. Here, choose the Recovery Console. It might ask the Windows XP cd, just keep the cd handy, ok
Then, type in
chkdsk /p and press Enter. Let it do its thing a while. After its finish, try to restart your computer.
Is it working now? Whether its working or not, post back here so I can guide you again, ok