Question When I press the power button nothing at all happens PSU doesn’t turn on

[Michael3212]

When I press my power button nothing at all happens, psu does not start/the psu fan does not start. I don’t know if it could be a becuase I don’t have a graphics card but my cpu has integrated graphics, I don’t have any way to test the ram or cpu but without those when the power button is pressed shouldn’t the psu still turn on. The standby light on my motherboard does work when psu is on standby... I called msi and they told me it is most likely a doa motherboard and to return it. This is a new pc build, help is much appreciated

 

[InvalidError]

There is zero fan spin on the case or psu and there never was, I’m thinking that the only explanation is the mobo because even if their was a bad cpu or ram it should still have some fan spin or turn on the psu for a second.

Your assumption is correct: if there is no power going to the motherboard, then there is no way for the CPU or RAM to affect anything. Most motherboards will allow the PSU to turn on (at least momentarily) without CPU and RAM installed since the motherboards need to power up before the platform management chip can detect that no (working) CPU or RAM is actually installed and shut the PSU down.

 

[claudiusraphaelpaeth]

I think it must be the mobo tbh

Most likely.

 

[Michael3212]

Your assumption is correct: if there is no power going to the motherboard, then there is no way for the CPU or RAM to affect anything. Most motherboards will allow the PSU to turn on (at least momentarily) without CPU and RAM installed since the motherboards need to power up before the platform management chip can detect that no (working) CPU or RAM is actually installed and shut the PSU down.

Ok thank you

 

[Michael3212]

Replaced the mobo and everything works

 

[MetallicMonk]

Good to hear!