So i woke up today and my computer isnt working. I turn it on, the fans go on briefly, and then it instantly goes off. The power button no longer works after this happens. I have to unplug it from the power outlet so it works again. I tried starting the system from the motherboard, so its not the actual power button. I tried starting without graphic card, no fans, no hard drives, still the same thing. The computer was working last night, how is it possible it broke itself over night?
Im going to try the power supply on another computer to see if its broken. What else could it be? Could the motherboard have gone bad over night?
Sounds like PSU to me, however check the 12 v rail (if u have one) and ATX connectors are connected the the motherboard correctly (Yea they can just become loose)