Change CPU rig wont boot

[Meepmeep]

Hi,

I have a B550-F gaming (rog strix), have been running it only with gpu. Today I decided to change the CPU to a 3900x to do some CPU mining. But after installing the new CPU the rig wont boot.

Have tried to reflash my ssd but still, it doesnt want to boot.

Any tips what I could try next or what I’m doing wrong here?

[keaton_hiveon]

Does it go into the bios? You have a gpu connected to it? Does it work with the old cpu?

[Meepmeep]

When I connect hdmi to one of the GPU, everything is spinning now, but dont get anything on display :S

[Meepmeep]

Its fixed now, needed to connect to a screen fix bios and then login to rig