Thanks. Will give this a try when I get some help from my mate. Yes, I really am that inept with computers

I’ve recently reinstalled fl on my laptop so I can start playing again. Really excited to start playing again, but when I boot it up, its only on half the screen. I’m not any good with IT stuff, so I’m a bit stuck. Is it cause I’m running it on windows 8.1?
Any help would be amazing!!