To disable the headphone jack and force audio to play through the internal speakers on your ASUS K55A in Windows 10, you can try the following steps: 1. Check Default Playback Device: - Right-click on the volume icon in the system tray and select "Playback devices." - Check if the "Speakers" are set as the default playback device. Right-click on the "Speakers" and select "Set as Default Device" if they are not the default. 2. Realtek HD Audio Manager: - If Realtek HD Audio Manager doesn't have an option to disable the headphone jack, try the following: - Open Realtek HD Audio Manager. Look for an option related to headphone detection or jack information. - If there are no settings related to headphone detection, look for...