Hi
I upgraded my HP Envy X2 to Windows 8.1 yesterday as it popped up on the store. The problem is when it was done it cannot activate, and says "This product key doesn't work". This is an OEM key (In BIOS).
Error Code: 0xC004C003
I tried to call activation center, they could not help. And the support can call me in 2 days in my work hours to help me.
Any ideas?