Last year alone I changed motherboards 6 times and also moved from win7 to win8.1. I had to RMA one board when the internet part went out, but the others were testing different mobo/cpu combinations. Sometimes win8 freaked out and sometimes it didn't. I did have to call Microsoft 2 times on the provided toll free number to get new keys. I need to know if this will continue or will it change. So far no one knows.