Unfortunately, there is no easy fix for this. This fix is the first thing you need to do if the Fn key works until you restart a computer. Find the software for managing the Fn key and enable startup. Open Task Manager and go to the Startup page. Such behavior makes the system start longer, especially on old machines. Some users hate when programs start automatically with Windows. If so, it tries to set the program to autorun when Windows starts. The Fn key operation may depend on previously mentioned software. It is possible that the manufacturer no longer supports Windows 10 due to the laptop’s age. If you have installed the software, but the Fn key still does not work, check the compatibility. That is the first thing you need to do after reinstalling Windows. Often time laptops require dedicated software and drivers from manufacturers. Press these buttons, then try using the Fn key again. You may also find a lock icon on the Esc button. Most often, the Fn lock shortcut is Fn + Esc. It often works with a dedicated setting that changes the F-row of keys on a keyboard to either work as F1-F12 or shortcuts keys. Some laptops have a dedicated Fn button lock that disables the Fn button. Begin fixing the Fn key not working problem with considering the following, most popular reasons.
