If you want to change visual notifications for sound (i.e. flashing active title bar, flashing active window, flashing entire display and none) on Windows 10 computer, just follow the guidance below.
Video guide on how to change visual notifications for sound in Windows 10:
Step 1: Enter Settings in the Start Menu.
Step 2: Open Ease of Access.
Step 3: Choose Other options, click the item under Visual notifications for sound and select an option from Flash active title bar, Flash active window, Flash entire display and None.