[SOLVED] PC not powering after installing new PSU

[Corza747]

So I’ve recently built a new computer,
I5 10650kf,
Gigabyte aorus elite ac motherboard,
Gigabyte aorus gtx 3070,
2x16gb t-force 3600mhz ram,
And I’ve put a castle360rgbv2 AIO cooler in for the cpu

Originally I used my old Antec 750w classic true power psu as I didn’t think I would need an upgrade for the build

Everything worked fine except when playing some games my pc would restart, I eventually pinned it down to the psu, so I went and bought a Corsair RM850 gold psu, it might be worth noting that this is my first modular psu I’ve bought, I feel like I’ve connected everything correctly but the pc won’t turn on at all, I’ve checked all the cables and plugs and can’t think of any reason as to why it’s not working

It seems I’m getting no power at all because I’ve got no lights on the motherboard and I’ve plugged a USB into the pc and the lights don’t come on for the USB which usually do even when turned off

Edit 1 - some photos of this helps

https://pasteboard.co/JV9qvRxv.jpg PSU

https://pasteboard.co/JV9r6tO.jpg Motherboard

 

[Corza747]

I solved it already sorry to waste your time, I figured out that the 20pin connector also has a 6 pin connector that needs to be plugged in to the psu as well, I’m not sure why, I just thought it was an extra cable but everything works now

 

[Jacozeelie]

Its a 20+4 plug. All modern mobo's use 24 pin and 6 or 8 pin next to cpu. Realy old mobo's use 20 pin and a 4 pin next to cpu. Happened to me a few times, forgot the plug next to the cpu

 

[punkncat]

I think the most confounding issue I have had like this is when the pins actually pushed out of the 20p connector while snapping in place. Swore up and down it was a bad PSU, and all I had to do was push one wire in.

 

[Jacozeelie]

Cheap crappy psu's does that. Specialy a cheapy office pc