[CLIENT] It ain't patching

Okay. So, last night for whatever reason, my league client wouldn't work. I'd double click the icon, the thing would pop up, I'd click launch, but nothing would happen. I figured "Hey, un-installing and re-installing things has worked in the past, why not now?" Well, it's just as big of an issue now. Whenever I go to patch the game, it stops updating somewhere in the 200 MB range. It'll just stop. My internet is fine; OI know because I'm watching Uber Danger on youtube while It patches. I've restarted the patching process four times now, and this is the second time it has stopped on 277 MB remaining. Any advice or help or something?