I don't see a problem as long as:
You use your own key code. To use his is a violation of copyright laws.
You have proof of purchase and Certificate of Authenticity (COA).
The recovery disk has all the software that came with your original disk. The disk might also be machine specific so be prepared for that. Good Luck and let us know.
and life goes on...
My recovery disc got damaged in the move from Scotland to France. I now need to go back to scratch with the pc. Is it possible to use a friend's recovery disc, also for Packard Bell and around the same era?
Help needed urgently as lots of glitches keep appearing.