Never been a big forum guy but I made an account to reply to this thread (& hopefully help), as I've struggled for a solid week to try & figure this out.
After trying everything under the sun (including the suggestions in this thread), it seems like I found the fix for my R9 (so far). While I got the regular version of AWCC to work once or twice, putting my PC to sleep or restarting put me back at square one. I dug through Dell's support website, trying to find older versions that might be "more compatible" with Win11 & found that there are actually 2 different AWCC installs that you can download for the latest version. The basic & a "full installer" version.
I did the usual steps that we all know by heart now (uninstall, clear regedit/%appdata%, etc), ran the full installer version, restarted my PC, & I'll be darned if the regular app booted like it never had a problem.
I left my PC running over night because I was scared once it turned off, I'd be back at square one. Not sure what happened but I had to hard reset the next morning. To my surprise, PC booted up, I clicked AWCC through the Start menu, starts up smooth as silk.
I'll leave the links below. Let me know if you run into any issues or if this ends up working for you. Hopefully it's the latter
Where I found it:
Support for Alienware Aurora R13 | Drivers & Downloads | Dell US
Direct install:
https://dl.dell.com/FOLDER09190551M...Center-Application_NT8C9_WIN_5.5.23.0_A00.EXE
Cheers!