League Client Refuses to Work

I had the client freeze, then tell me it reloaded itself to an earlier patch after i was forced to close it. It then refused to register my user at all. After that i redownloaded the client, and now it's having problems patching. The first time it loaded most of the patches (around 68 percent) and then told me there was an error in the patches. No idea what i'm supposed to do here guys. I already redownloaded the client.