Quote: Originally Posted by mborner
Unfortunately, your original license key is likely to be OEM. In that case, the operating system cannot be migrated to another system, ever. If your your original Windows installation is somehow retail, there will be no problem.
Not quite but what Tews said is right
So you know - The motherboard/laptop has to be identical to the last you one you owned, same model/part number.
But this only works if your replacing the motherboard like-for-like
Phone Microsoft, explain the situation and they should be able to transfer the license.