The first part, that being the horizontal lines, sounds more like a GPU driver or even hardware problem and less like a problem with windows. The part about windows being only a cursor is a very frequent problem to some people but also can be caused by a variety of other problems. I would recommend completely turning off the computer and then unplugging the computer and letting it sit for a few minutes. Try turning the computer on after that and it should go directly to windows. I would also recommend leaving it to sit fora few minutes. Sometimes its just caused by a problem with windows booting.