I had purchased Windows 8 and upgraded my PC with the latest OS. However, my motherboard burnt due to some issue and I had to replace my motherboard and processor. When I installed my copy of Windows 8 in my new motherboard, it says that my Product Key cannot be activated because it is installed in another PC. I called Activation by Phone but after entering the numbers it says "Technical Error. Please try again later" The error code is 0xC004C008. I cannot deregister the product key from my previous installation because that motherboard is burnt. How should I activate my legal copy of Windows? I tried the customer support and not had much help. They keep redirecting me to the Activation by Phone and there I get the "Technical Error. Please try again later" issue.