PC turns on for a split second then turns off

[dense roost]

I have tried breadboarding it with just my cpu its cooler and one stick of ram in a2 to no avail. All i hear is the psu click on, then about 1-2 seconds later click off. Next steps?

[dry prism]

do you have a second psu to test with? could be defective

[dense roost]

i was thinking that but the only psu i have is my brothers and id have to dissasemble his whole pc to try it out

he prolly wont let me

i can try but itll have to be way later

[unreal fox]

what's the name of your power supply?

[unreal fox]

because I'm not too familiar with building PCs, but in this photo this cable says PCI-E on it, but isn't that slot for the CPU cable? I'm not sure if that's the right one. Just wondering if there are any other cables that fit in that place.

Ya so I was watching this video: https://youtu.be/bZNbfgr0Y8w?si=j-Ad5M0AH0vKiTj2, and at 5:58, he talks about how 8 pin PCI-E power cables look a lot like 8 pin CPU EPS cables. Apparently those connectors are made in such a way that you can't put one into the slot of another, but I'm sure you could force it on if you tried. In the picture of yours that I sent, that slot is for the CPU EPS cable. So check that out. Like if there's another PSU cable that fits that slot. Because you might have the PCI-E power cable on there.

[celest shard]

Something seems to be triggering OCP. I’m not sure what psu you have but that usually means there is a short or an incompatible connection

This could be caused by many factors

Did you power the system on while it was on a table?

[dense roost]

bro im dumb this was the issue 🤦🏾‍♂️

idk how i didnt notice this i even said pcie in the vid

thank you bro im gonna put the whole thing together and see if it runs cause i took it apart cause i was having a usb header issue in the first place

[unreal fox]

Cool tell me if it works

[dense roost]

pc is working but i am having a gpu issue

i have a 3060 and fans are spinning and when i plug in the power cable leds turn on but it displays no video

i plugged my hdmi cable into the mobo and it worked but my gpu wasnt showing up in task manager, just the integrated graphics

i tried my brothers 1050ti and it worked

so its either my gpu is having issues or i have an issue with the pcie cable

and my psu isnt modular so 😭

[unreal fox]

any way you can try using your gpu on his computer? I feel like the GPU is probably fine. Does the pcie connector look damaged? It's possible to fix that manually if so. But maybe you can just smash it into shape.

[dense roost]

i trie his gpu in his pc with his pcie connector with no luck

anything else i can try?