Hello, I am looking for a checklist of what I need to test on my rig after experiencing the mouse, keyboard and monitor turning off and the computer remains powered on other wise. I am forced to perform a PSU turn off as power buttons on case are unresponsive. I have tested and passed RAM with memtest86, I have also tested the HDD (chkdsk). Other than the last resort, buying a new PSU, what should I be testing? Currently on Corsair RM750 less than a year old also.