Hi i have Windows 8.1 on my machine, but i wanted to do a clean install. I downloaded the iso from the microsoft tool and make the usb boot with rufus (i have gpt partition). Now when i press install it shows me this error: A media driver your computer needs is missing. This could be a DVD, USB or Hard disk driver. If you have a CD\DVD, or usb flash drive with the driver on it, please insert it now. What i can do?