[Windows 10] How to disable Fast Startup in Windows

  1. Type and search [Power & sleep settings] in the Windows search bar, and then click [Open].
  2. Click [Additional power settings].
  3. Click [Choose what the power button does].
  4. If the fast startup option is grayed out in Shutdown settings, please click [Change settings that are currently unavailable].
  5. Unselect [Turn on fast startup], and then select [Save changes], your computer will disable the Fast Startup feature in Windows.