
Look for an Fn Lock shortcut key or an F Mode shortcut key on your keyboard. This also tends to lock many toggle keys like Num Lock, Shift key, and Caps Lock. One of the most fundamental reasons why the Function keys are not working in Windows 10 is because you may have accidentally pressed the Fn lock key. The methods listed below can be used to fix function keys not working issues. There are ample amounts of solutions available to resolve the problem.

If the Fn key not working issue occurs, there’s nothing to worry about. Reset the PC 9 Solutions To Fix Function Keys Not Working In Windows 10 Make Changes in the BIOS Configuration Settings

For DM4, you need to install the Latest catalayst from AMD website. you can obtain the graphic driver from the HP website or from the manufacturer website. One of the solution especially for HP 15 and HP DM4 is to update the graphic drivers. HP 15 Notebook and HP DM4Notebook - Update Graphic Driver: Right click on it and select Enable, if there are no "Enable" option and you only see disable, your monitor is not the problem.ģ.
