I recently bought an unbranded windows 8.1 tablet. (it's brand is unbranded and it's from best buy) and I want to put windows 7 on it. I can easily do so by putting windows 7 on a usb and installing it but I want to know. One is I know windows 7 technically supports touchscreen, but would it really work after installing? two would things like the built in camera/webcam still work? What is the risk?