I have a weird problem, my computer boots fine and restarts fine as well. The issue occurs if the computer is left on for a few days and when you go to restart it doesn't POST. The lights and the fans are all on and working but nothing is displayed on the screen and the only way to get the PC to boot is to cold boot it. Troubleshooting performed: Reset CMOS via BIOS and jumpers Changed GPU Used on board GPU Changed CMOS battery Actually just changed the battery and restarted and it seemed fine, but it usually takes 3 days for the issue to occur so its really hard to pin point what the issue is. I don't think its the PSU because this PSU was working in another setup just fine.