Here is a slighty longer explanation, believe me ya dont want the full one

I need to backup my main files (about 30GB) because windows activation was giving me grief and only gave me 7 days to activate just randomly out of the blue even though my comp WAS activated. It kept saying it was activated but the warning message didn't stop and it got to day one so I couldn't leave it any longer so thats what started this

I hooked up my HDD to my dads comp to backup the gear, got through that okay then needed to reinstall windows on mine. My cd was scratched and wouldn't work on its own, I had to use dads for a couple of the files, whilst using his disk my burner scratched the hell outta it and ruined it.
I go to use his comp which shouldn't have changed cos the hard drive was not connected but now windows doesn't want to boot. I want to do a repair install which I have done many times before but instead it does a new full install

and erases the table that lists all previous files. Also had trouble installing with 2 botched disks.
Got another windows running on his comp but doesn't show ANY previous data, windows wrote over whatever was under it and I have to use data recovery prog to get back what I can (which is what I am doing now).
So it has his emails, his files, other peoples files, and my backup on it and some of them have been overbloodywritting because ghey windows didn't do a repair install and just did a full install why it did this is beyond me. Anyways... it sucks