

In that case, if the underlying Windows license is from a retail copy, that license can be transferred. A motherboard upgrade, even if you reuse storage, video, memory, and a case, is considered a new PC. The one exception is a motherboard replacement, which will inevitably cause the Software Licensing Management utility to recognize the device as a new PC and require reactivation, typically over the phone. If that happens, a quick call to the activation line will resolve the issue, often without any human contact required, in minutes. As I noted earlier, Microsoft doesn't provide details of how it calculates that hardware hash, but upgrades of system components such as a video card or a hard drive won't normally trigger a reactivation. Update: In the comments, several people have asked what happens if you make changes to hardware. This is new territory for Microsoft and for its customers. I honestly have no idea how the telephone activation hotlines will respond to calls from Insiders who want to activate a copy for the first time.
