How to hook up an external monitor

Here is a way how to hook it up "blindly" http://www.youtube.com/watch?v=w3qg9DFIi... and I think what I get from that is to right click on the desktop, press down on the keyboard 6 times, tap right 2 times and hit enter, but you better verify that :-) As you already tried to use Fn+F5 to change outputs, you can also use ctrl-alt-f12 to access the intel manager, there you can set display options. I have the general Acer One SERVICE manual posted for you on my storage site and the screen is available here amazon and its actually a good price. Good Luck to you and let me know if this helps.