Microsoft 最近修改其版權修款，表示 “新主機板等如新電腦”，所以如果手頭上只有 Windows OEM 版，而在現有的主機板沒有損毀的情況下更換新主機板，那就要購買新的 licence。
微軟表示: “An upgrade of the motherboard is considered to result in a ‘new personal computer’ to which Microsoft OEM operating system software cannot be transferred from another computer. If the motherboard is upgraded or replaced for reasons other than a defect, then a new computer has been created and the license of new operating system software is required.”
以上的修款改動只針對 OEM 版，對零售版沒有影響。