So my computer runs perfect fine doesn't blue screen or anything bad at all when its on. However i have noticed that over times of turning it off and on the computer is taking longer like the fans will take more time to spin up when powered on and it is taking longer to shutdown. Then after this happens for a while when i shut my computer off it wont turn back on. It will start too and then just shut off immediately. Another time it turned on but none of the fans came on. Every time i turn of the power supple and unplug everything and turn it back on it works fine. I have tested the power supply winch is a corsair ax760i and has a self test button and everything comes back green. So i don't really know why this is happening its weird. However i am missing one standoff screw in the bottom left corner of my motherboard because i just didn't have a screw. could this be the issue? Also whenever i turn my computer on in the bottem left i see A2 dont know exactly what that means.