PC won't boot from my SSD and takes me into the bios

[oreoabove]

Hey everyone, I've seen this problem on a few posts but most don't really address the issue. I build a new PC and installed Windows via a flashdrive, but when restarting to finish the installation it boots my into my BIOS and I have to manually boot into my SSD to finish the install. A few things I have tried:

1. Made sure flash drive was disconnected when windows prompted a restart

2. Left Flashdrive connected during the second install

3. Removed the flash drive during the third install

For every single new install I did the following:

1. Removed CMOS battery

2. Replaced CMOS battery

3. Changed SSD to a different slot

4. Changed bios settings in CSM, actived and disabled it on multiple boots

5. Changed bios settings to UEFI only

6. Made sure SSD is the only drive connected

7. Reinstalled Windows 3x now

8. Reset bios settings to default

9. Updated bios

None of this has worked for me. I can boot into windows manually in the bios and it will work but the PC does not directly boot into windows. Not sure what else to do at this point.

hardware: Asus z790 v ax, i9-12900k, 7900 gre, g.skill 32gb. 

[JohnAb]

Windows should set the OS boot drive automatically, but have you tried setting it manually in BIOS as the boot device? I can't suggest any other ideas right now.