PC Restore was Unsuccessful with Windows XP

I am running Windows XP on my Dell Dimensions 5150 desktop PC. When I am performing a reboot, I clicked F11 so that I could perform the PC Restore. I got an error message saying that the:
“Restore was unsuccessful. Please click restart to reboot.”
Now I just did what it said. I rebooted my PC but my files are inaccessible. Then it gave me a second error message:
Loading PBR for descriptor 2… done. A disk read error occurred. Press Ctrl+Alt+Del to restart.
I am now so tired of doing everything again like rebooting, restarting and all. And I just ended up to the same problem. Please help me how to fix this. I could not be able to view my files.
Thanks!
