I have recently installed Windows 7 and still trying to learn how it works. The strange behavior is this: I set up the display for dual monitors and that works just fine. Later, when I get the security prompt asking whether I am sure I want something to run, AFTER it returns to normal display, the display reconfigures itself, and I lose the second monitor. I then go and manually reconfigure the displays and turn it back on. OR, I can unplud the display and plug it back in, and windows auto-detects it. But SOMETHING is running and turning off the monitor while it is connected.
I can reproduce this at any time by pressing "ctrl-alt-delete". This bring up the "lock this computer, switch users, etc screen". If I then press ESC, I return to my normal desktop (on two screens) but about 5 to 10 seconds later, the displays flash, and everything has been consolidated to a single screen.
After returning from the security mode SOMETHING is being run that resets the displays back to a single display mode.
My question is: how do I find that program and disable it? How do you find what programs are being run after returning from the "security screen" mode of windows? This is very likely a 'convenience utility' which is attempting to take care of the screens for me, but I don't want it to. I have been searching the web, searching windows documentation, but I am not even sure how to phrase the question.
Another clue: in the start menu, an entry appears for "displayswitch". I have never run this myself, but choosing it from the start menu I can re-enable the second monitor. It seems that something is causing this to be run, and this is causing my machine to return to single screen mode.