So I have been having a problem ever since MC was fully released. My game randomly crashes often. It shows the default dirt background then goes to black. I have to restart my client then. I have force updated MC and updated Java. I am running on a 64 bit Windows 7 machine with 8GB RAM and a ATI 5770. I had none of these issues during 1.8.1. If you have any suggestions, please help me.