Lol Crashing my Macbook Pro

Starting March 7th, my League Client has been crashing my computer. At first i thought it was the usual in game crash, I proceeded to restart and attempt to load in, the 7 min late. But upon opening the Client, not in game, my screen froze up as if i was in game, and i had to restart again. I have tried to other programs on my computer, all work fine. the only problem is when i open the LoLPatcher, my screen freezes and am unable to use my laptop at all. I attempted to uninstall and reinstall LoL, but while starting to reinstall the patcher froze again. So while i can use my Laptop still, LoL is completely out of reach. Any advice or help would be appreciated.