Computer originally turned on for a split second then turned off and turned off. Now it wont even turn on

Tidecaller

Commendable
Feb 27, 2016
2
0
1,510
I came home after a camp one day to find I could not turn my computer on. My power button LEDs were flashing irregularly and when I pressed on the switch, it caused a short circuit in my house. I can not even get my computer to output a signal for any amount of time (my monitor just has the "no signal" displayed constantly)

After a week i tried to turn in on again after unplugging all my drives and my graphics card and removing and replacing the cmos battery and it worked for a slightly longer while then started cycling on/off again.

Now when i press the power button nothing happens whatsoever. However when i flip the switch on the socket it causes a short circuit within the extension plug (my fan switches off). I have brought my psu to a shop to test and it is alright.

Im really not sure on what to do now so any and all help would be very much appreciated!

Specs:
CPU: i5-4590

GPU: Sapphire R9 280

RAM: G.Skill Ripjaw 8GB (2x4GB kit)

Motherboard: Asrock H97 Pro4

PSU: Corsair cx750m

Storage: Samsung 850 EVO
 
Solution
If the PSU is good, then I would have to say motherboard, or your power button switch. You could try removing the power switch, and jumping the power pins with a screwdriver. You would need to do that anyway, for bread boarding the system, outside the case anyway.

logainofhades

Titan
Moderator
First step would be to remove everything and do the breadbox approach, to make sure there are no shorts maybe coming from your case. How did they test that PSU? If it is just a simple paperclip test, that means nothing. It can pass that test, and still be a malfunctioning PSU. Those CX 750's are not quality units.
 

logainofhades

Titan
Moderator
If the PSU is good, then I would have to say motherboard, or your power button switch. You could try removing the power switch, and jumping the power pins with a screwdriver. You would need to do that anyway, for bread boarding the system, outside the case anyway.
 
Solution