League freezes my computer

About every 3ish games or so, about 23-25 minutes into a game, League will freeze my computer. Not shut it down or blue screen, but freeze it. No idea what is causing it. Any suggestions?

Heres my specs: Windows 10 M5A97 LE R2.0 NVIDIA GeForce GTX 970 AMD FX 6300 Six Core EVGA SuperNOVA 750 G2 80+ gold