Desktop won't auto shut down when ups battery low

enchant said:

Do you have a similar setup as me? Desktop computer with a UPS connected?

TBH, I don't know what "hibernate" means. Is it different from shut down?

Note in the computers with a UPS I do see the UPS battery in the Device Manager but that doesn't help. You still need some software to know when there is a power failure and how much time to wait before it shuts down your computer. Without that software the computer will shut down only when the UPS battery is unable to power the computer any more. It is not a good idea to totally drain these batteries. Also, if you do, the UPS will take 8+ hours to recharge the battery.

If you shut down, then any open programs that are running are terminated and any unsaved work you are doing is lost. When you restart the computer you have to restart any programs from before and reopen any files you were working on. Naturally any unsaved files from before are lost.

When hibernation is enabled and you shot down into hibernate the state of the computer is saved. In other words a list of the programs you were running and what you were doing with them is saved into a file called C:\hiberfil.sys. Also, files you were working on and their unsaved contents will be saved the same way. This way when you restart the computer, you will see all the programs you were using open and all files used with them with their previous contents.

Note the file C:\hiberfil.sys. is normally hidden so to see it you must unhide it.

enchant said:

That's good info to know. Thanks. In truth, I never leave unsaved work open. The computer that I leave on when I'm in bed or gone for long periods of time is simply a server that watches things and takes actions based on changing situations.

The two computers with a UPS are normally turned on all the time but go to sleep after a period of inactivity. However, that doesn't prevent the backup programs from waking the computers and doing the backups from 12am to 6am. After the backups are done the computers go back to sleep after the inactivity timer has elapsed.

I have never had a server because I have never needed one. I have 5 desktops and 3 laptops. File sharing over my home network has proved sufficient.

BTW, despite the limitations of Windows networking I rarely have any problems accessing any computer from another. This includes computers with a mix of Windows XP, 7, 10 and 11. This doesn't include my Raspberry Pi 3B+, 4B, and 5. For them it is usually easier to share files using flash drives.