You have two options... You could either pay a visit to eBay and see if
you can find the same exact motherboard, which that doesn't even always
work, or you can go ahead and reinstall Windows and at least try to
convince MS to grant you a re-activation. I've seen this happen
successfully many times.

nick21_34 wrote:
my mobo on my dad's pc just broke and he has an oem version! from what i have
heard your oem is bound to your mobo in some way, is there any way to lift
this cos i really dont want to have to buy another oem.