I finally fixed this. Downgrading the bios would still show the same auto power on, just at a different time.
The fix is this:
- Go into your bios settings, and enable "auto power on " and select a day under "auto power on mode".
- Save bios settings, let it boot up to windows.
- Restart, go back into bios and disable "auto power on", save and reboot.
That fixed it finally for me. Like I speculated before, it looks like the bios update is not truly displaying the correct settings for your bios and it shows off when it's actually on. Forcing it on/off fixes it.
I don't know that the BIOS version 2.1.2 is inherently bad. It may be akin to the situation where you upgrade 100 Windows machines, and 1 or 2 have an issue until you remove and reapply the update.
If you flash back up to 2.1.2, does the problem return?
I am going to do that right now, since I confirmed bios version 2.1.1 does not exhibit this auto start behavior.
I have a feeling it is a poor implementation of how bios settings are reset.
I noticed a few times in the past that "load bios optimized defaults" does not always truly load all the defaults and you sometimes have to do it a few times to get it to do it's job.
I checked the settings, screen shots are in this thread. Obviously it should have worked properly with those settings and not auto start-up, but it did.
And I can confirm, a flash to bios version 2.1.2 and the behavior is back. I was greeted by a happily running Alienware R10 when I came home today.
Back to bios version 2.1.1 until they fix this issue, whatever the issue might be. The changelog said they enhanced the PXE boot environment in bios version 2.1.2 for Ryzen 5000 systems. I am on a Ryzen 3000 system, I have a feeling that is the place to look for this anomaly.
Hopefully I did not wear my flash ram out with all these flashes back and forth!
Sorry to drag this back up but I believe I have the same problem.
I set up my R10 Wednesday night everything was fine, I turned the system on Thursday night and updated the bios to 2.1.2, Friday night I came it to find the system powered up. If I find it powered on Saturday I will downgrade the bios.
Probably not relevant but after the update my memory is now on OC1 instead of 2
I can't be 100% sure I had this problem since before my system had a chance to power on again I used the "optimized defaults" button twice while testing some memory settings. Since my tests I have not had the system power itself on again.
Vanadiel
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Posted April 10th, 2021 10:00
I finally fixed this. Downgrading the bios would still show the same auto power on, just at a different time.
The fix is this:
- Go into your bios settings, and enable "auto power on " and select a day under "auto power on mode".
- Save bios settings, let it boot up to windows.
- Restart, go back into bios and disable "auto power on", save and reboot.
That fixed it finally for me. Like I speculated before, it looks like the bios update is not truly displaying the correct settings for your bios and it shows off when it's actually on. Forcing it on/off fixes it.