If Sleep is missing from Power Options, first check which sleep states Windows reports as available.
- Open Command Prompt as administrator.
- Run:
powercfg /a
This reports the sleep states available on the system.
Since Hibernate is showing but Sleep is not, also make sure hibernation is enabled:
powercfg /hibernate on
Then check Power Options again:
- Start > Settings > System > Power & sleep > Additional power settings
- Select Choose what the power buttons do
- Select Change settings that are currently unavailable
Important points:
- Windows only shows sleep options that are supported by the laptop hardware.
- On some systems, available power policies differ depending on whether the device uses modern standby or traditional sleep/hibernate states.
- If a power state is not supported by the machine, it will not appear in the Power menu.
If Sleep still does not appear after reinstalling Windows and checking the settings, the output of powercfg /a is the key next step because it shows whether Windows currently detects any supported sleep state.