Windows 10 lets you customize power prefs to manage better how your setup uses power.
For example, if you want to speed up your machine, enable Performance mode.
Keep in mind that this option willdrain your batteryfaster.
If you dont want that to happen, go for a Balanced plan.
As a quick reminder, this option helps your Windows computer to boot up faster after a shutdown.
select it, and the fast startup option should become clickable again.
Enable Sleep and Hibernate
Fast startup and Hibernate go hand-in-hand.
As a matter of fact, it’s crucial that you enable Hibernate first to use fast startup.
If you disable Hibernate, Windows will automatically disable fast startup as well.
Then choose the option that says, Change configs that are currently unavailable.
If Fast startup is still greyed out, enable Sleep andHibernatein the Power menu.
you could also tweak your Registry and set the HiberbootEnabled value to 1 to enable fast startup.
