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Z690-I boots to blank screen unless I reset the CMOS button

Level 7

12700K 3080 12 GB Asus Z690-I 32GB G.Skill
Motherboard boots LED cycles from white to yellow to green and holds.  Gets to a green light and holds a green solid.
When powered on the monitor shows a signal, but no video just blank screen.

What I’ve tried so far:
Removed and reseated the ram.
Pull the video card out, completely plugged HDMI cable into on board video - same thing happens
Monitor shows a signal but a blank screen..
Checked other connectors to make sure they were not lose .

I’m at a loss I have no idea what’s going on . I don’t even get a bios screen if I try to boot holding F2

I decided to try resetting the CMOS using the rear button. I hold in the button while plugging it in and it boots to the American Megatrends screen where I can hit a key so it continues into the BIOS. I can then exit the bios without saving changes and it boots to Windows. If I power it off i have to go through holding the CMOS button in all over again to get it to boot. Is there something I need to do in the BIOS so that it boot normally after being powered off? Thanks for any help.


Super Moderator


Flash to the latest UEFI via USB Flashback and see if this resolves the issue:

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090