Hi there! I am getting random shutdowns and I am not sure where they are coming from. I will be in the middle of a task, usually but not always a game, and the computer will just die on me. Not lockup, but hard shutdown. I have stress tested my gpu and this doesn't cause crashes. The weirdest thing is that I have to leave the power switch on the PSU off in order for the computer to be able to be switched back on. I am guessing all of the capacitors need to discharge for it to be able to be turned back on. The computer posts 100% of the time when it switches on, however. Also, the CPU is not overheating. Any ideas? PSU is seasonic ss-750km 750w, which is 6 years old but a very, very high quality PSU.