Re: Data Recovery
You can try a KNOPPIX CDROM, which you can burn and boot from.
Knoppix is a Linux distribution that fits on a single CD.
You can use that to boot the system, mount your existing Windows partition, and recover any files you need, backup them up to another system over the network. Then you can reinstall or replace the OS, once you have your files off the system you don't need to worry about wiping the hard drive.
The other possibility is to fix your Windows installation, which will probably be more difficult.