This is just really random but have you guys ever had a problem with your computer going to black screen when you walk away and then its just stuck there? I even tried hooking it up to an external monitor....and nothing still just black. The computer lights were on the fan was running etc. but nothing else. I just hold down the power button to turn it off then turn it back on and it works fine. Its freakin weird and it can't be my inverter because the monitor is LED and I don't believe LED monitors have inverters. Do you think its my video card or something? ........Have you ever had this happen before?
I've had this happen to me several times. All you have to do is cold boot it. It's 70% chance likely to work again. 29% chance that you have to reformat it. 1% chance of it not working completely.