Having trouble installing windows 8.1 from vista

topzombie22

Honorable
Aug 2, 2013
22
0
10,520
So i today recieved my Rx 480 upgrading from my crossfired 7850 xfx raedon hd series and i see i need windows 7 or above, problem, im on vista, so i got to my local best buy and purchase a copy of windows 8.1 and install in, while in the process of installing it, the message (windows cannot be installed to this disk the selected disk has an MBR partition table. on EFI systems, windows can only be installed to gpt disks) appears so it absolutely will not be installed on my first hard drive and my second hard drive absoloutely refuses to have anything to do with it.