Open Control Panel → System and Security → Power Options → Choose what the power buttons do. Click Change settings that are currently unavailable, then select Hibernate under Shutdown settings and save. If the checkbox is missing, check whether the PC can hibernate.
01Check the menu first
Section linkOpen Start → Power after saving. If Hibernate appears, save any open work and try it at a time when you can wait for the PC to resume. Hibernate uses less power than Sleep and restores your session on startup, but resuming can take longer.
02If there is no Hibernate checkbox
Section linkOpen Command Prompt and run powercfg /a. This lists the available sleep states and can explain why a state is unavailable. If the output says hibernation is disabled on your own PC, open Command Prompt as administrator and run powercfg.exe /hibernate on. Run powercfg /a again, then reopen the Power Options page to check for the checkbox.
03If Windows still reports it as unavailable
Section linkRead the reason next to Hibernate in the command output. A reduced hibernation file supports Fast Startup but not full hibernation. If the output points to a device limitation, check the PC maker’s guidance. For a managed computer, share the output with IT rather than changing settings outside your permissions.