Solved : Solution of AmazonBasics Wired Keyboard Function keys not working

It is because windows service is turned off.  Follow the procedure and your all function keys and other shortcut keys will start working.

Restart the HID Human Interface Service

To fix this problem yourself, follow these steps:

1. Open Microsoft Management Console (MMC) snap-in for Services.
   • In Windows Vista or Windows 7, click Start , type services.msc in the Start Search box, and then press ENTER.
     
     If you are prompted for an administrator password or for a confirmation, type the password, or click Continue.
   • In Windows XP, click Start, click Run, type services.msc in the Open box, and then click OK.
2. In the list of services in the Details pane, double-click HID Human Interface Service, and then make sure that the Startup type is set to Automatic.

Now check the AmazonBasics keyboard you will see your keyboard working state.

Thanks for reading.