100 percent the CPU heatsink issue. I also managed to strip the screw the case that secures the graphics card. I am going to buy a new case and heatsink, for heatsink is this recommended http://www.amazon.com/Cooler-Master-Hyper-212-RR-212E-20PK-R2/dp/B005O65JXI/ref=sr_1_1?s=pc&ie=UTF8&qid=1407051908&sr=1-1&keywords=hyper+212+evo