Question PC doesn't turn on

[amiria703]

Hi
I have a problem with my PC which it doesn't turn on
I tested the PSU with a neon screwdriver and it looked like it worked
Also I tested some parts and connections of motherboard with a neon screwdriver and that parts turned it on
I checked the connections between PSU and motherboard but they're ok
The PC was ok until I transferred it from a place to another
Is the connector of power button simply makes them connected to turn on?
If so, I tried to connect the two parts to make it on with no results
Is it the time to change the motherboard?

 

[JohnBonhamsGhost]

make sure ALL cables and components are firmly seated into their corresponding ports, slots, etc.
even if they appear to be correctly installed, make sure by reseating them again.

also make sure the power outlet you are using is functioning properly.

 

[amiria703]

make sure ALL cables and components are firmly seated into their corresponding ports, slots, etc.
even if they appear to be correctly installed, make sure by reseating them again.

also make sure the power outlet you are using is functioning properly.

Thanks for you reply
The power outlet is ok another device is connected and it's working properly
I've checked the connections (ATX, ATX 12V, Bios Battery, RAM, Graphic Card, etc.) but I'm not sure about CPU and the cooler

 

[JohnBonhamsGhost]

I'm not sure about CPU and the cooler

normally you would just get an error in POST screen upon boot if there was an issue with the CPU in it's socket.
but reseating it would just rule out another possible, even if unlikely, cause.

 

[amiria703]

normally you would just get an error in POST screen upon boot if there was an issue with the CPU in it's socket.
but reseating it would just rule out another possible, even if unlikely, cause.

So I should have POST error about CPU if anything become wrong, right?
No fans nothing even seems to start
Also in a test I removed RAM Bios Battery GPU I tried to turn it on with just CPU PSU and Motherboard
And only ATX, ATX 12V connectors are connected between PSU and Motherboard
Again, nothing appeared to start 🙁