Hello! I have problem with my laptop, originally it has Windows 8, then i upgrade to 8.1. And about 7 month later the trouble begin. Windows tell me that i need to activate the windows, but i can't. Windows giving error 0xC004F012. Then i call the microsoft customer service. Then she took over my computer, try everything and eventually give up. Even the Microsoft can't solve this problem. Does anybody have some ideas, what to do?