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January 9th, 2026 08:26
Pro Max Tower T2 FCT2250, randomly turns on then off, multiple times, while shutdown
I have a Dell Pro Max Tower T2 FCT2250 running Windows 11 Pro.
It works fine while I am using it, but after I have shut it down for the night, it will randomly turn on for 5 to turn 10 seconds, then turn off again (usually with a loud click). It does this at random times throughout the night, 2 or 3 times. It doesn't boot in to Windows (it doesn't have enough time), so I don't think it's Windows related. I hear it turn on, the monitors wake up, then a few moments later it just turns off again.
I can't see any BIOS settings that might be related
Any thoughts on why it might be doing this?
redxps630
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January 9th, 2026 11:49
Possibly doing firmware update by itself which requires multiple restarts . Modern pc has UEFI capsule auto update schedule during night when the AI master presumes its human user is sleeping and not hearing what it is doing so figuratively speaking the toy soldiers in that pc all got animated and started maintenance work assuming no human could hear the bustle. It is considered normal in the days when bios update is taken over by the machine itself unlike old days.
redxps630
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15.5K Posts
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January 9th, 2026 22:48
Updating device firmware involves installing new software onto a device’s firmware, which is the low-level software that controls the hardware. This process can improve the device’s performance, fix bugs, add new features, or enhance security. The steps may include the following:
Preparation: creates a capsule containing the firmware update.
Staging: The capsule is copied to the /EFI/UpdateCapsule/<capsule>.cap file in EFI system partition (ESP), before OS triggers capsule update.
Reboot: The OS triggers the capsule update and restarts the system to enter the UEFI environment.
Update Initiation: The UEFI firmware detects the capsule and starts the update process.
Verification: The firmware checks the capsule integrity and authenticity.
Installation: The firmware is updated using the capsule data.
Completion: The system reboots again to complete the update.