If you take out the drive and install it as a second drive on a working computer, you can drag your personal files off the damaged drive and make a backup of your files onto a thumb drive, DVD, etc...
or you can have a computer shop do it for you.
You can load an XP installation disk and do a repair install of the operating system.
See THIS forum, fourth post from the top for directions. This does not erase your personal files, if you follow the directions carefully.