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Monitor will not turn on until Windows sign-in screen appears - cannot access BIOS

Conao
Level 7

Hi,

I have a Z390-F Gaming MB with an i9-9900K CPU and an RTX 3080 GPU. The CPU is OC to 4.7GHz and I'm running Win10.

Everything has been working fine since 2019. A week ago, I updated the BIOS to the latest version to get the TPM support and be able to upgrade to Win11. After the upgrade, though, the system is behaving weirdly.

I thought the problem was the OC but it seems still stable, as it has been for 5 years. The GPU and the monitors are what seem strange. The monitors now take a very long time to turn on, which might cause my Fences to end up on the wrong monitor. Even the size of the icons on the desktop looks strange. I checked that the displays are still configured at 125%, but the UI looks like it is at 100%. 

I played around with settings in the BIOS and, eventually, made it worse. I enabled iGPU Multi-Monitor and now the displays don't turn on until Windows login, so I have no access to the BIOS anymore.

I guess my only option now is to reset the CMOS, right? I can do that, but I wonder if anybody knows what is the issue with the displays in this more recent BIOS version (2.20.1271). Everything was working perfectly before, fast boot and no strange behavior.

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2 REPLIES 2

Zheega
Level 11

Try accessing BIOS settings from Windows advanced restart options - https://www.digitalcitizen.life/enter-uefi-bios-windows-11/

mraksoll
Level 9

try use another display or HDMI port.

i have SLI , so if i wire to 2 card , result will be the same , there most be option at last page where you can choose what GPU will be initialized first.