|Since you were planning on doing a reinstall the time to backup your files was before you attempted the reinstall, not after.|
During a reinstall you get an option to delete the existing partition. Once done that space is now unallocated. I assume that's what you did. Normally then you create a new partition in that unallocated space and continue with the reinstall.
If you now want to revert back to what you had there's a lot of software that can help. You might try this:
You can do a google search for "unallocated space" recover for other suggestions. Whatever you use will need to be installed on a bootable flash drive or cd/dvd. It's important that you don't do anything else with the hard drive--that is don't create a new partition, format or attempt to write to it. If you do, that will make recovery more difficult. Just run the recovery software.
message edited by DAVEINCAPS