Strange Motherboard Behaviour

[PhoenixSP]

I have an Asrock B550 Phantom ITX which has been acting rather odd,

When in the bios if i disable csm i can no longer reboot, I get left with a black screen but pc is still responding.

I have the latest bios and windows install is uefi,

Had another problem where if i enabled XMP the pc would power off during windows boot but that has been fixed with some replacement ram :/


system is :
5900x
Asrock b550 Phantom ITX
Gigabyte 3080ti

 

[alec]

Sounds like it picks wrong display output by default. Experiment with plugging cable into different ports? Or maybe there was a place in bios to choose which output to use...

The memory thing was just a case of system crashing during boot, so it was unstable at XMP timings.

 

[PhoenixSP]

Thanks for the reply, Unfortunately different ports dont make a difference and there are no output options in the bios, cant believe how much is lacking from an asrock board, doesn't even have ram voltage monitoring. Going to try and reinstall graphics drivers in case this is a windows issue.