Recently my computer started to stop in the middle of what I was doing and the screen would turn completely black and I would get no response to my keyboard or mouse. I've tried many steps ie - removing ram, reseting cmos, disconnecting and reconnecting all power and components, using the onboard video card and my PCI-E card and still no luck. I'm trying to figure out if I need to buy a new processor or a new motherboard or possibly both? Any help is greatly appreciated, thanks in advance.