1) Boot a live Linux install CD and run off the CD. Then mount the NtFS petition onto the linux system and look for any files you need to save.
2) Plug in an external USB drive and copy files you need from NTFS partition to the external drive
3) Replete Step #2 using another external disk so now you have redundant copies of your data.
4) unmount and unplug both USB drives and verify they are good copies and the data is readable.
5) Wipe the entire internal drive Windows and all and install Linux as the only OS. No dual boot.
6) Install a virtual machine on Linux Virtual Box works well. Reinstall Windows in the virtual machine, Upload your data from there USB drive
7) Use virtual machine controls "snapshot" the VM. You...