My Windows 8.1 laptop never goes to sleep at all. It either restarts or shut down.

Solution
certain machine have bugs in the BIOS and drivers, window can detect that you have one of these machines and download certain settings that will turn off functionality because they know it is broken on your machine with the BIOS version you have installed.

They can not make you install the BIOS updates but they can disable the broken feature to prevent you from getting a corrupted operating system.
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or you may have set the system to high performance in the power management settings.

certain machine have bugs in the BIOS and drivers, window can detect that you have one of these machines and download certain settings that will turn off functionality because they know it is broken on your machine with the BIOS version you have installed.

They can not make you install the BIOS updates but they can disable the broken feature to prevent you from getting a corrupted operating system.
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or you may have set the system to high performance in the power management settings.

 
Solution