Hello I recently bought a AW2721D via Amazon. As of yesterday I noticed the joystick on the back of the monitor started messing up and the screen would randomly start showing the menu as if someone moved the joystick down. I will exit out of the window and then it will open it up again and start scrolling down the menu. Which had led me to believe that the joystick is stuck down. Not sure if there is a fix for this?