new bios 1.0.18 was released, but not sure that fix is there. Have not tried it yet.

Any updates will be posted by @DELL-Chris M in the sticky thread on this forum.

I have installed the BIOS 1.0.18 (date 6 Dec. 2021) and Alienware OC Controls Application (date 7 Dec. 2021).  My power button is working correctly.  Also the Fusion Page of the Alienware Command Center is working correctly (CPU, GPU, and Memory values).  I did not install the Alienware Command Center Application because the date indicated June, 2021 in the install window.  Hope this helps.

It is interesting that the Alienware platform team released BIOS updates for both the Aurora R8 and Aurora R9 on the "same" day. But, neither mention the "not powering on" issue. Users should install the new BIOS for their model and report back to the Forum with their results.

Alienware_Aurora_R8_1.0.20.exe
February 21, 2022
Fixes & Enhancements
- Firmware updates to address security vulnerabilities.

Alienware_Aurora_R8_1.0.19.exe
January 12, 2022
Fixes & Enhancements
- Firmware updates to address the Intel Security Advisory INTEL-SA-00527 (CVE-2021-0107, CVE-2021-0111, CVE-2021-0114, CVE-2021-0115, CVE-2021-0116, CVE-2021-0117, CVE-2021-0118, CVE-2021-0119, CVE-2021-0124, CVE-2021-0125, CVE-2021-0156).
- Firmware updates to address the Intel Security Advisory INTEL-SA-00532 (CVE-2021-0127).

Alienware_Aurora_R8_1.0.18.exe 
December 6, 2021
Fixes & Enhancements
- Firmware updates to address the Intel Security Advisory INTEL-SA-00562 (CVE-2021-0157).
- Fixed the issue where the BIOS cannot be updated using executable file on systems with Windows 11 operating system.

Alienware_Aurora_R9_1.0.16.exe
January 12, 2022
Fixes & Enhancements
- Firmware updates to address the Intel Security Advisory INTEL-SA-00527 (CVE-2021-0107, CVE-2021-0111, CVE-2021-0114, CVE-2021-0115, CVE-2021-0116, CVE-2021-0117, CVE-2021-0118, CVE-2021-0119, CVE-2021-0124, CVE-2021-0125, CVE-2021-0156).
- Firmware updates to address the Intel Security Advisory INTEL-SA-00532 (CVE-2021-0127).

Alienware_Aurora_R9_1.0.15.exe
December 6, 2021
Fixes & Enhancements
- Firmware updates to address the Intel Security Advisory INTEL-SA-00562 (CVE-2021-0157).
- Firmware updates to address security vulnerabilities.
- Fixed the issue where the BIOS cannot be updated using executable file on systems with Windows 11 operating system.

Interesting...thanks.

just updated to 1.0.18 from 1.0.9 (Deep Sleep Control option disabled in config)

Power button still not working correctly, powering on only when multiple tapping.

so awaiting for another version... and rolling back to 1.0.9, again.

I never had any problems with "power on" button on my R9.  After BIOS update I still do not.

I do the BIOS updates for the security patches.  If Intel admits there is a problem, who am I to disagree.

Also upgraded to latest AWCC...but I only use it for setting color on R9, so I can't comment on the other features.

Windows 11 and BIOS 1.0.15The latest...for now

Wow bummer... 

Note that the Alienware command center update does mention the power button problem, in case no one saw that. I guess it was the culprit?

A classic example of hiding in plain view.

Who put that there?