Hi. I'm new here, and my problem has probably already been discussed on another thread, but I just kind of didn't want to have to read through every thread. Ok, I came home from work, and my PC was shut down. I tried to start it up again, and it powered up, but for literally only a second, then shuts down. I've opened it up, and checked to see if anything was touching the motherboard, or if the heatsink was not making proper contact with the CPU. Everything looked fine visually. I did notice that when I unplug the P8 connector the optical drives start up, but nothing else (that's probably normal, but I've never seen it). The power supply, I suspect, is fine since the fans and everything start up for just literall one second. Anyone know what's going on? Am I forgetting to check something? Anything would be helpful. Thanks.