Question New build has no display and CPU cooler randomly ramps up then slows down again. What do I do?

[Davidino]

Hi, just built a brand new pc with the following specs:

Mobo: Asrock B760 Pro RS/D4
CPU: i3-12100f
GPU: MSI GeForce GTX 1650 Aero ITX
RAM: Corsair vengeance rgb 3200mhz cl16
SSD: Lexar NM710 NVMe
Case: NZXT H5 Flow rgb
PSU: Cooler Master G750M

When I turn it on all fans spins everythings works great, except I have no display and the cpu cooler randomly ramps up and goes back down. I have no idea what to do.
Could it maybe be that I don't use the atx 12v2 port on the motherboard? My psu doesnt have an extra cable for that.
Please help??

 

[Lutfij]

Coolermaster G750M
How old is the PSU in the build listed above?

My psu doesnt have an extra cable for that.
If your PSU lacks the necessary connectors for your components, you either have the wrong components for your build or you have the wrong PSU for your components.

 

[Davidino]

Coolermaster G750M
How old is the PSU in the build listed above?

My psu doesnt have an extra cable for that.
If your PSU lacks the necessary connectors for your components, you either have the wrong components for your build or you have the wrong PSU for your components.

I read that the second cpu connector is for overclocking and power hungry cpus, the i3-12100f isnt overclockable nor power hungry