Still Crashing!

Ok so at this point i'm starting to get annoyed and almost ready to quit trying. I've reported this to riot, they emailed me back and pretty much copy & pasted their help section and told me figure it out.

For the past "week" my game has been crashing after champion selection. It will go black after the league of legends logo pops up, start to go full screen then it will crash and give me a error report page. I tried reinstalling the game, it worked but then since i had to reinstall the game i wanted to rechange my screen resolution back to what it was before, as i'm changing the resolution in game, it bugs out and does this half screen thing and i wasn't able to click on anything. So the only way to get out of the game was to shut down my whole computer manually. After that i tried to reconnect to the game and BAM!!! i'm back to having these stupid crash reports.

Its getting tiresome because they also recommended me to test my client out on custom games, Which i did after reinstalling and thats how i knew it was working now. But since its failing again i was in a game after a already 20min Q timer from the first time i was having problems with this whole crashing thing. So now when that game is done, since i'm technically AFK i'll probably have a 30min Q timer. This is sad and completely unfair that i'm not only getting punished for something i'm not even causing to then not even being able to play the game,

if anyone has had this same problem and has found some way to fix it or get around it i'm all ears........[zombie-nunu-bummed]