Direct quote from Microsoft OEM licensing:
Q. If my customer asks me to upgrade his PC with new hardware components, when does a new operating system need to be acquired? When
would the PC be considered to be "new"?
A. Generally, you may upgrade or replace all of the hardware components on your customer's computer and the end user customer may
maintain the license for the original Microsoft OEM operating system software, with the exception of an upgrade or replacement of
the motherboard. 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. If the motherboard is
replaced because it is defective, you do NOT need to acquire a new operating system license for the PC.
--
Carey Frisch
Microsoft MVP
Windows - Shell/User
Microsoft Community Newsgroups
news://msnews.microsoft.com/
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:
| Carey Frisch [MVP] wrote:
| > "Another common misconception is that you can transfer
| > a preinstalled or OEM copy of Windows from an "old" machine
| > to a new machine. An OEM software license may not be transferred
| > from and old machine to a new machine-even if that machine is no
| > longer in use. The OEM license is tied to the machine on which it
| > was originally installed and can't be transferred to other machines."
| >
| > Ref:
http://www.microsoft.com/piracy/YourPC_do.mspx
| >
| > The motherboard is the "heart and soul" of the computer.
| > If you change the motherboard to a different motherboard,
| > then a "new computer" has been created and a new Windows
| > XP license is required since the old OEM license is no
| > longer valid with a new model motherboard.
|
| That does not say that changing the motherboard results in an entirely new
| pc. It only states you cannot transfer it to a new PC.