If you have not yet looked in the sound panel settings you may not be aware that the layout has altered , example ..... more speaker/microphone options are added to the set up list so you might not see the one you want unless you scroll the green icons.
Since the update you may also find that head phones dont work on some games unless you plug them in before launching the game.
Try the following , this might help you ... maybe !
1. Go to device manager/ sounds and mic tabs then right click and uninstall drivers even if they dont have a yellow triangle on them. Windows will reinstall them on restart. 2. In sounds/playback tab right click and disable the realtek digital output. just above the icon when using SPEAKERS you should see a green tick in the speaker icon , right click if missing. When you plug in your headphones the icon will go out and if you scroll down you will see a new one for headphones . when you swap between speakers and phones it takes a few seconds to find new device. 3. check properties tab on both headphones .... green jack highlighted and microphone pink jack.
finally at bottom right corner where the speaker icon is change the tab to realtec high def audio , i have my volume at 50% because at 100% when I used headphones on level 2 so 50% makes headphone adjustment more user friendly.