League client isn't working... again

So recently my League of Legends had decided that it doesn't wanna work anymore. I have no clue why. I open up the client, and it opens up for 2 seconds then it gives me an error report. Then it closes the client, and opens up another instance of the client, that one crashes and opens another error report. This goes on until I close all of the error reports. It opens the client log-in screen, it closes, opens an error report message, opens another instance of the client, then closes it, then it opens another error report, then just rinse and repeat. I have tried everything: restarting my computer, reinstalling League of Legends, uninstalling certain files, uninstalling the League client and trying to run it as an administrator, even disabling my firewall. You name it and I've probably done it. The only thing I haven't done is wiping my computer. Which it's sounding like the best and only solution to do this. I tried to figure out what to do for like 6 hours straight yesterday, and I think I'm going insane. I need my League