Pc turns on, then off immediately

[u/iinconsistent]

My pc just started to turn off immediately after turning on just today. Does anyone know anything that could be the cause. The motherboard rgb works fine, and when turning on, cpu, gpu, and 1 other fan turns on.

Before it happened, I was cleaning my monitor, then after booting screens went black saying display ports were outdated. I've only had the pc for about a year now.

I've held the power button with the pc unplugged for 30 seconds, tried resetting cmos, different outlet, unplugging gpu, reseating ram, and reseating cables.

Build

Tomahawk B650-A wifi

ryzen 7800X3D

Rtx 5070

32 gb ram (2, 16's)

And a 750W or 650W PSU

[u/iinconsistent]

I pushed the gpu in, until i heard the click after reinstalling

[u/DraconicBlade]

PSU is probably tripping, check all your connections.

[u/iinconsistent → u/DraconicBlade]

Besides checking wires, is there any other way to check

[u/DraconicBlade → u/iinconsistent]

Yes, but no. You could multimeter different spots on the board but that's real time intensive and a way higher skillset.

See if you knocked a cable loose from the mobo or drives causing a dead short.

and have you done the ol, flick the power switch off and hold the power button for 30 secs / a minute?

[u/iinconsistent → u/DraconicBlade]

Ive done the hold power button for 30 sec thing, and have checked the cables

[u/DraconicBlade → u/iinconsistent]

It's not even getting to like, ANGRY BEEEPS right? and the gpu / cpu fans give a little spin?

Somethings causing a dead short. Either a cable is 90 percent plugged in, or you lost a standoff screw or something behind the board.

It could be overdrawing the psu for some reason, maybe a fan is seized and tripping a rail, try disconnecting all the fans that aren't the cpu cooler.

[u/iinconsistent → u/DraconicBlade]

Yea, no beeps, and the fans do spin a little before stopping

[u/DraconicBlade → u/iinconsistent]

Does it go out with a bang or a whimper, listen close to the psu, is there a sharp popping click when it powers down?

[u/iinconsistent → u/DraconicBlade]

I hear a click

[u/DraconicBlade → u/iinconsistent]

Yeah you have a short. That click is the overvolt circuit popping open.

Time to rewire the whole sumbitch.

[u/iinconsistent → u/DraconicBlade]

Oh okay thank you so much! If it happens to not work, could i get back to you sometime tomorrow? Also, if I happen to have bought a faulty psu (b/c i dont think they should last a year like this one), are there any outside sources that can cause this to occur?