[CRASH] Client crashes during loading screen for no apparent reason

Dear Riot, Over the past couple weeks i've been having an issue with loading into game. The problem is the same each time. Each game my percent shows 0% until everyone (including myself) are at 100%. Normally that is not an issue, except once or twice a week my game will crash during loading screen. When this happens I am forced to reconnect, only by that time my team has opted to /remake. After a couple of weeks of 2-3 /remakes (and presumably being reported for Leaving/AFK) I have been put into Low Priority Queue for 20 minutes a piece and I am begging to have it repealed. Over this past weekend I had my entire computer analyzed, over the phone as well as bringing it to have it analyzed by a tech, and my computer is totally, completely, one-hundred percent fine. I've checked my wifi connection and ping and all signs point to a great quality game. I just got the new Nasus skin and now I need to wait 20 minutes before I can even search for a game in order to use it. Please help me, I just want to play this game that I love.

-Raynor Sadface Rasmussen