To change the audio output to headphones in Windows 10, follow these steps:
1. Connect your headphones to the computer. Make sure the headphone jack is properly plugged into the audio port on your device.
2. Right-click on the speaker icon in the bottom-right corner of the taskbar.
3. From the context menu that appears, select "Open Sound settings."
4. In the Sound settings window, under the "Output" section, you will see a list of available audio devices. Locate your headphones in the list and select them as the default output device.
5. If you don't see your headphones listed, click on the "Manage sound devices" link. This will open the Sound control panel.
6. In the Sound control panel, under the "Playback" tab, find your headphones and right-click on them.
7. From the context menu, choose "Set as Default Device" to make your headphones the default audio output.
8. Click "Apply" and then "OK" to save the changes.
Once you have set your headphones as the default audio device, the sound output will automatically be directed to them whenever they are connected to your Windows 10 computer.