League won't open after clicking "launch"

So I hop on to my computer because I want to play some league, next thing you know after clicking "Launch" nothing pops up. I try again thinking this is just a little issue that my be resolved by restarting the patcher. Nope, nothing pops up again. i check my task manager and its running, but its running in the background. I look up some solutions like:

• Restarting My Computer
• Uninstalling and Reinstalling
• Deleting the latest patch and downloading it again
• Clicking LoLClient.exe from its file location after clicking "Launch" from the patcher
• Running league as an administrator
• Turning off firewall

I tried all these given solutions but none worked. Help is appreciated, thanks!