I have decided to purchase a new laptop (Lenovo G50 15.6) to replace my current one (Compaq 615), which preforms very poorly. However, that new laptop comes with pre-installed Windows 8.1, which I absolutely loathe, as I consider Windows 7 Ultimate to be, well, ultimate. I wish to know if there is an inbuilt way to downgrade pre-installed 8.1 back to 7?