Cannot open my folder

Hi,

I’ve just tried to install Windows XP Pro and everything went fine until it got to “checking disks”. When it got to 50% my PC froze and when I re-started, XP tried to install again… until the 50% and froze again. Now I have cancelled the install and gone into my drive, to find some of my folders are no longer a folder and are now just a file.

CHKDSK both before the install and now say no errors on the drive

Is there anyway I can get my folders back?

Thanks for any help.