Before you start this process you should download a copy of the drivers from the Microsoft Surface Pro to a different computer or USB drive. Windows will NOT automatically install drivers and you will be left with a computer that cannot reach out to the Internet or network. You will also need a Windows license key for the version of Windows you are downgrading to if your computer did not come from the manufacturer with Windows 8. (Windows 8 has windows license key hard-coded into the computer.) First you will need to properly format the USB drive. Open a “Disk Partition” by holding the windows key on your keyboard than pressing the “r” button and let go of both keys. You should get a little window that looks like this called the "run" window Then start the diskpart utility by typing "diskpart.exe" and hitting the ok button List all the disks and identify your USB stick: "list disk" Select the disk number that is your USB s...