at that stage, I doubt it... all the relevant System files have already been replaced and wiped...
Time to look under, at the back, or on top of the PC where the COA stickers usually are, for the KEY...
or time to call Microsoft and explain to them what had happened, they might be nice and give you a new one...
or you have to purchase a new license...
Ben
"If it works don't fix it! If it doesn't use a sledgehammer..."