Dear forum users,

I have a Lenovo Thinkpad X200 tablet computer with Windows 10 in use. I usually use two monitors (including the screen from the computer itself) which work fine normally. Sometimes, after I connect the computer to a project to give a presentation, then when I reconnect to the external monitor, the resolution stays as the same as the projector and cannot be changed by all means. In the setting when I tried to adjust the external monitor resolution, it always say "please try a different resolution setting" or "the monitor cannot be identified" or something similar. I have to restart my computer in order to have a proper resolution on the external monitor.

Is there any way to fix this problem? Thanks.