My picture for monitor show in my MAC laptop, and I can not again to back her in my first monitor. It show always in MAC laptop, becouse I do somthing and can not go back to show in my monitor.
I buy mu LG monitor, and when I want to connect with my MAC book, I somehow press the option to show picture in my laptop, instead to monitor.Now I can not go back to solve the problems.I see always picture for monitor in my laptops . Monitor stop working.