hi guys i have one question about reinstalling windows 8 upgrade so my question is this, im gona buy a new motherboard and will use the same hdd which i have now windows 8 pro (upgrade) installed in it when i install mobo in to my case ,can i reinstall windows 8 with upgrade dvd or should i have to get OEM virsion or do i have to either ? i know it sounds stupid but need help in this area