I have posted about this problem in the past and have not got an answer, so I would like to try again.
The video setting, at most times, constantly changes from single monitor to dual monitor, along with the attendant blank screen and "boink" sound. This happens with no input from me.
I can look at the screen resolution in control panel as this happens and see the change back and forth.
I have corresponded with Intel about this since the video driver is theirs, but they have been no help either.
The computer is a Dell Inspiron N7010 and the op sys is Windows7 64 bit.
I have screen shots of the two different settings, but I don't see how to attach two files to this post If you can tell me how to do that I would appreciate it. . I have attached one of them.