Windows 10 Problems

I just updated my Alienware to Windows 10 a few hours ago. I can pull up League, but as soon as i press play it just becomes a black screen. I've troubleshooted the compatibility & tried out all the settings, none of which worked. Then i came on here & looked up previous boards and saw a few people say to just restart my computer, so i did. And i am still getting the black screen. I thought "Maybe it's just loading slow" so i left the black screen up, hoping eventually it would become the log in, but it never did. I'm really enjoying my Windows 10, so i would hate to go back to Windows 8, but i will if i can't find a solution. League is more important than cool upgrades, lol. Please let me know if any one has any idea how to fix it or if League can even run on Windows 10 to begin with.