Question PC won't turn on unless CPU is removed

[Reyki86]

Pc specs:
Motherboard: Msi mag b550 tomahawk
Gpu: Gtx 1660
Cpu: Ryzen 9 5900x
Psu: EVGA G3 550w

Hi, sorry if my english is bad.
Last night my PC was working perfectly fine, but this morning I turned it up and after a few minutes it suddenly shut down, after trying to turn it up again without success, I opened it, removed each component from the motherboard until it could turn on again, then I realized that it turns on with any component connected except for the cpu.

Even if I just leave the CPU and power supply connected it just doesn't turn on. I tested each component (Gpu, Cpu, psu, ram) in another motherboard and they worked perfectly, so I suppose the problem is in the mobo.

Does anyone know what could be the issue? I couldn't find anything useful on internet...

 

[rgd1101]

pc doesn't work without cpu. not sure what do you mean by turn on without cpu

modular psu. make sure it connected both end.

 

[Reyki86]

pc doesn't work without cpu. not sure what do you mean by turn on without cpu

modular psu. make sure it connected both end.

I mean it turns on without the CPU but is not usable, the thing is that when the CPU is connected it doesn't even turn on.

 

[rgd1101]

yeah check the power. and check for bend cpu pin

 

[Reyki86]

I checked the psu cables and cpu and they're ok, as I said I tested those components on another mobo and they all work fine.

 

[yossibac]

Your first call is to replace the Motherboard, if not it's the CPU