windows now crashing

I've been playing league since patch 4.17 was released however since October 1st 2014 i haven't been able to complete a game. I can load into the home page as well as start a game get through que and even load in with no problems. At around the 25 to 35 minute mark however i immediately disconnect and the game shows the icon of "attempting to reconnect" nothing happens. So after waiting for it to reconnect i close the client and attempt to reconnect; at this time everything acts normally the load screen appears with just me loading in i load all the way up to 100 percent at normal speed the game waits about ten seconds and kicks me back out saying that "the game has crashed". Now i know we have been having problems with Mac users crashing but i'm playing on Windows and I haven't experienced this problem ever. I've already repaired league, updated my computer, checked my firewall settings, and lowered my setting in league as low as they will go. I'm truly upset in that i can't even finish one game of normal let alone ranked and the system is counting it as leaving instead of loss prevented; i have no clue what else to do and open to any advice