Turning on Graphic Equalizer in Windows 7 Media Player 12.
Open the Media Player.
You will now see the now playing window.
In this Now Playing Window of Media Player Right Click in the Window and select Enhancements from the drop down.
Then select Graphic Equalizer.
You should now see the Graphic Equalizer.
( NOTE ) : You can also just open the Now playing window and right click on it.
Select Enhancements.
Select Graphic Equalizer.
In the now playing Window select Play all Music.