Question Troubleshooting PC case causing automatic power on

[shahdarock]

Hi,
I have been facing a weird issue for the last few months. I have mentioned my specs below. My PC was working just fine. I built it all new in July 2018. After 2 months it was built I faced the issue with the power button. The power button had to be pressed almost 3-5 times to power on. Then almost 3 months ago when I turned off my PC and went away after a while I saw it powered on again automatically but it kept going through the boot loops. I switched off the main power and kept using the computer but after a while this issue kept showing up again and again. If I leave my PC connected to main power it'll keep powering on automatically. It's not AUTO WAKE UP on LAN issue as this option was turned off. I even removed the power headers from motherboard and it kept powering on automatically so not an issue with the power. So after alot of troubleshooting I finally teared the whole build apart and put it back together on motherboard box and tested all the scenarios and it was working like a charm with no issues. So it turned out to be my case is the issue now I don't know if it's the issue of power case leaking earth or it's an issue with the power button board. So what do you guys think might be issue? Is my troubleshooting result is right? and what should I do next?
Thanks in advance.
Regards
Shahrukh Khan

SPECS:
MB: Gigabyte H370M DS3H
Processor: Intel Core i5 8400 - 6 Core 6 Threads - 2.8 Ghz
Ram: Corsair Vengeance LPX 16 Gigs (8GB x 2) DDR4 2400Hz
GPU: MSI GeForce GTX 1060 GAMING X 6GB
Case: Corsair Carbide Series 275R
Cooler: Cooler Master Hyper 212 LED Turbo
PSU: Corsair VS650
Storage: Seagate Firecudda 1TB SSHD
LED: Viewsonic VX2476-SMHD 24 Inch 1080p HD Bezel-Less IPS Display
Mouse: Corsair Harpoon
Keyboard: A4Tech Bloody B328-8 LIGHT STRIKE GAMING
UPS: Stabimatic Gemini UPS - 650VA - Black

 

[jay32267]

I think something that should be insulated from the case isn't insulated from the case.
I would mainly focus on the motherboard itself and the power button assembly.
Maybe install the motherboard in the case but leave the button assembly not touching the case.....and vice versa.

 

[stonecarver]

It could be also your USB front panel is not playing nice or your front panel sound header as well.

 

[shahdarock]

I think something that should be insulated from the case isn't insulated from the case.
I would mainly focus on the motherboard itself and the power button assembly.
Maybe install the motherboard in the case but leave the button assembly not touching the case.....and vice versa.

Good Idea i'll give it a try

 

[shahdarock]

It could be also your USB front panel is not playing nice or your front panel sound header as well.

hmm I thought of that too mainly I think it's the issue with the front panel assembly I remove the whole assembly and will try to find if it was causing the issue
Thanks