Files Missing After System Recovery

I had and umountable boot volume blue screen come up on my dell inspirion, so I ran the windows xp cd, and used chkdsk /r. When it was running at about 70% it jumped back down to 50% and then continued to finsh the recovery, it said several problems fixed.... so i assumed it worked, but the jump back to 50 must be caused by some error. Now I can run windows, but its like the computer has amnesia. All user icons are there, but none of the set pictures for them. So i clicked on mine, the start menu is empty, and when i run files the recent files aren't saved to the start menu. Ontop of that all files I had on my desktop are gone. Mydocuments is empty all of that. When I went to look for my files, all files saved in the c: drive are still there, in fact the c: drive used disk space is exactly the same size as it was before the unmountable boot volume error. Which leads me to believe that all the files I had saved on my desktop and in mydocuments are still somewhere on the hard drive. Its like all files connected to users on the computer have dissappeared and no files can be saved to the user accounts, but the user names are still there. What happened to my computer, and how do i fix it and can i get those files back. I also tried running chkdsk again and it did the same thing around 70% and dropped back down to 50% before it continued working.