PC won't turn on or post

Einzbern

Honorable
Feb 16, 2013
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10,510
As the title says.
PC specs:
PSU: Corsair HX850
CPU cooler: Corsair H80i
CPU: Intel I5-7600k
Video Card: GeForce 1070
Memory: Corsair Vengeance LPX 16gb (2x 8gb sticks)
Harddrives: 2 SSD and 2 HDD

Unfortunately I woke up this morning to my PC off (I always leave it on overnight) and making a clicking sound.

The fan on my CPU cooler seemingly works fine, as does a red LED on the motherboard itself. Nothing else powers on.

When I first power it on, the CPU cooler fan revs up like it always does, then shortly after I start to hear a clicking sound every 4-5 seconds. Here's a video: https://www.youtube.com/watch?v=Nzo-i6B9erQ . With each click, the red LED flickers a little bit, but it's hard to tell if the CPU cooler fan slows down at all (and not because it's so dark in the video).

At first I thought it might've been my harddrive, but I unplugged that and the clicking still happens. After googling around, it sounds like clicking is something the Corsair HX850 does.

I'm not sure what else I can try to narrow this down.

Update-
I don't think it's the PSU. I ended up taking it out and using the paperclip method (bridge a green cable to a black one on the motherboard connector) and hooked up a single old molex harddrive (while disconnecting everything else). The harddrive seemed to start up fine; there was no clicking either. The fan on the psu itself only started up briefly before stopping, but I think the HX850 is a 'fanless' model.
 

Einzbern

Honorable
Feb 16, 2013
7
0
10,510


I ended up hooking the PSU up to the gigabyte mobo+a single ram stick and cpu fan I used until last year, Seemed to work fine and it posted with a single beep. On to testing each part now qq.

 

Einzbern

Honorable
Feb 16, 2013
7
0
10,510


We're up and running.

I ended up unplugging almost everything from the mobo, and still had the same issue. I removed the mobo from the case and only had a ram stick plugged in. It gave me 5 beeps for post. I thought 5 beeps meant something to do with the CPU, but I found a youtube video that lead me to finding it was the ram. I had my ram stick plugged into the 2nd ram slot so I put it in the first slot. I then got a 1 beep post. Woot!

I unplugged my psu from the mobo, put the mobo back in my case and plugged the PSU back in. Started it up, but I was back to square one. Once more I took everything out, did the same thing as before, and again one beep for post.

This time I left the PSU plugged in and put the mobo back in the case. It continued giving me one beep. So I just slowly put parts back in while testing power up after each part. Finally got everything plugged back up and here we are.

In the end, I'm not really sure what the issue was.