I may be replacing the motherboard in my HP desktop computer with an identical motherboard from HP. If I am reading correctly, I probably will not have to re-install Win 7 but will have to re-activate. Am I correct?
But I have another problem. I believe I also need to do a repair installation of Win 7 SP1. My original install disk is pre-SP1 and the media refresh install I was able to do has not fixed everything. If I un-install SP1 can I then do a repair install with my original disk? I can always run Windows Update later.
Or do I need a fresh copy of Win 7 with SP1 to do a repair install?
Do you need to reinstall Windows 7? Probably not! Not if the motherboard you are installing is the same type of motherboard as the one you had before.
What version of Windows do you need to perform a repair install? You will need the same Windows version as the one that’s already installed. If you have installed SP1 for Windows 7 through the Windows Update service, that means your Windows version number has changed. So if your Windows 7 media does not have SP1 integrated, you will probably not be able to do a repair install with that.
Yes, you might get away with it, if you uninstall SP1 first. But you probably won’t be able to uninstall SP1 if you have performed a clean up after installing SP1 and removed the service pack files (using cleanup tools like compcln.exe or dism.exe). In which case you will have to perform a clean install. You can perform a clean install with Windows 7 media and an OEM or full version license key. Upgrade keys will not work.