Go to device manager then click on view->show hidden devices.  Then scroll down drop-down "sound,video and game controller" -> uninstall all devices named with "Realtek Audio"(including hidden and visible).Now right click on "sound,video and game controller" -> scan for hardware changes or simply restart your computer. That number "2-" will disappear. And Boom problem solved.
I have an out of warranty G3 15 3500 with windows 10 21H2. Recently in windows update an optional update was shown with was 2 updates one was Intel(R) corporation system 10.25.0.8130 and i updated it after that a number 2 is showing ahead of speaker(2-Realtek audio).Now after that I restarted my pc and after that other optional is not there and this number 2 is showing in front of speaker. I restarted twice but this is not going. My speakers are working okay. Is there any way to remove that number. [IMAGE]  
G3 15 3500, number 2 is showing speaker name