Hi Davon. I'm Greg, 10 years awarded Windows MVP, specializing in Installation, Performance, Troubleshooting and Activation, here to help you.
What are the other choices for SATA controller settings as you're not showing them.
The Windows 10 standard is AHCI so that would be the first choice, followed by SATA and in rare cases RAID is the SATA controller setting.
If you are still under warranty then Asus needs to help you configure this due to complications added by Optane, IRST, etc. It is not satisfactory for their tech to tell you it "ought to be there." At that point I'd ask for escalation or a supervisor. Since you've updated the BIOS if there isn't an AHCI or SATA setting and if RAID is not the SATA setting for your mobo, then they need to fix or replace it under warranty.
Do you know how this started? Was it a Windows Update or the BIOS update? Have you tried resetting BIOS to defaults? Is UEFI enabled, CSM disabled, Secure Boot on (try turning it off to see if that helps), Windows Boot Manager set first to boot?
If it's installed in Legacy CSM and you have the modern UEFI BIOS, then you need to reinstall anyway in UEFI mode. But Asus needs to help you get the SATA controller setting for WIndows 10 and 11 configured.
Feel free to ask back any questions. Please report back results for all steps given so I know what else to suggest if necessary.
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