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4 Posts
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4388
March 26th, 2021 06:00
Optiplex 5050 turns back on by itself after shutdown
I have a bunch of 5050 micro desktops that are suddenly turning themselves back on after you shut them down in Windows. They turn off, and then after a little bit they just turn themselves on again. I have updated the BIOS on them but it still happens. I've also checked the power settings in the BIOS and disabled any items that auto power them on (Wake-on LAN, etc). I'm not sure why it is still happening, could it be something in the Windows power settings?
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bertro514
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363 Posts
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March 26th, 2021 06:00
The culprit might be the "Intel Management Engine BIOS Extension" which has its own auto-on settings, separate from Wake-on-LAN and other regular BIOS power-on settings.
Check out Sirihi's message here and replies after that (super old thread, but it seems even newer optiplexes suffer from this):
https://www.dell.com/community/Desktops-General-Read-Only/OptiPlex-755-mysteriously-turns-itself-on/m-p/2949670/highlight/true#M693054
RockyM
4 Posts
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March 26th, 2021 11:00
Thanks. In all my years of working with Dell computers, I never knew there was another BIOS. I am going to check that when I am onsite there again next week. It's really weird. I have a lot of 5050s that work fine and stay off when they are shut down. And now these 5050s suddenly started turning themselves back on. And no BIOS settings are ever touch by anyone. I wonder if there is some windows or driver update that affected these. That's the only time these machines see any changes, I run Windows update and Dell Command to get updates.
bertro514
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363 Posts
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March 26th, 2021 12:00
From what I read on the other thread and in the wikipedia article, it's not a Dell specific thing, but rather an Intel feature on certain business computers, to help sys admins with asset management. It's probably why it features the ability to remote start computers, on top of what the BIOS already provides. (And since that "second BIOS" requires a strong password, the idea is to disable the regular user from tampering with WOL and other settings).