Computer automatically powers on after being plugged in, no display.

ImagelessJt

Commendable
Jan 4, 2017
1
0
1,510
Hello all, this is my first post here so if i posted this in the wrong section then im sure a mod will move it to the correct one. Ive had this computer for a few years now and ive never had any problems out of it other then the power supply fan being slightly louder then I like, most of the time due to dust buildup.
My computer was working perfectly when i went to sleep last night, I leave the computer on most nights as well. When i woke up today i turned on the monitor and im getting a no signal on my display. First thing i tried to do after checking all the wires and cables were connected was restart my computer by holding down the power button, But after holding down the power button for 15 seconds i got concerned. I unplugged the power cord and of course the computer shut down. As soon as i plug it back in, It immediately powers up by itself. I also noticed that the rear case fan isnt spinning anymore either, although all the other fans are spinning like normal. I checked to make sure the rear fan was seated correctly and it is. Ive tried researching this but i cant seem to find anything that matches my problem.

TL;DR- Computer powers on when plugged in, Wont turn off. No display. Rear case fan not spinning.
 
Solution
I can tell you the first thing I would do is find a spare power supply that I know works and try that. I'm not an expert in power supplies, but from my limited understanding the second that the motherboard gives the OK for the PSU to turn on, that fan goes on, regardless of the operating condition of other components.

James_465

Commendable
Jan 4, 2017
3
0
1,520
I can tell you the first thing I would do is find a spare power supply that I know works and try that. I'm not an expert in power supplies, but from my limited understanding the second that the motherboard gives the OK for the PSU to turn on, that fan goes on, regardless of the operating condition of other components.
 
Solution