There's currently only a work around available as per the sticky on this forum. It's a (slow) work in progress.
So a few months ago (I believe 2 bios updates ago) this issue started.  Alienware Update started up and said BIOS update was urgent, so I did it.  PC restarted countless times during the process.  After that, for some reason it would fail to detect the factory nvme, something to the effect of "no drive detected" and then start up fine.  I didn't mess with anything and just hoped it would be ok.  Other than that, no issues. Then the most recent BIOS update dropped and installation went a little better, with fewer restarts for the BIOS update.  Now it plays this game where I tap the power button and it won't do anything on the first push.  Usually the second or third it will start.  However, once it does come to life (fans, rgb, etc) it appears like maybe it fails POST, goes dead, and then starts back up. I've thought about downloading 2 versions ago version of the bios to see if it corrects it, but I saw others having similar issues after BIOS updates (links below), so I wanted to ask here first.  First one marked solved but didn't read like it was solved: [URL]#M53291 [URL] [URL]#M53439 Thanks everyone  
Aurora R8, appears to fail POST and then start after BIOS update