Computer Shuts down immediately after Turning on

[rtcrow49]

In June of 2017, I built a PC, it worked fine until a month ago where while in a game it randomly shut down, I tried to reboot it and the fans started to spin, lights turned on and it shut off again. I just waited a bit and tried again, it turned on. I went in and updated all drivers and such to make sure it wasn't that. Now just again, I was in a game, and the same thing happened. Could this be due to overheating from too much dust? Also, stupidly, I had the PC on a carpet. Could this have blocked the bottom vent for the PSU?

Update:
I unplugged all PSU cables on both the PSU and the component and it booted. I believe the 24 pin is not connecting all the way.

Link to Build Specs

 

[jay32267]

"I unplugged all PSU cables on both the PSU and the component and it booted. I believe the 24 pin is not connecting all the way.
"

Unplugged them and plugged them back in I assume.

It may have been just a bad connection.

As far as heat.....if you download HWMonitor or Afterburner...this will show you temps.

As far as dust. I don't think dust is an issue. You have to have an awful lot of dust to cause heat problems.