Toshiba once "repaired" our laptop by replacing swapping in a completely different motherboard. They asked for the drive, but I pulled it myself before mailing it in.

The resulting computer could no longer boot Linux, or the windows factory recovery disk that came with the machine (or stock windows).

That (and the shoddy initial design with a half life of 6 months) is the reason I will never buy a Toshiba laptop again.