Help with connecting projector to desktop

January 13, 2011 at 13:13:32
Specs: Windows Vista
When I plug in the projector to the back of the computer via VGA Cable the Projector goes dead. It works fine on laptop but not on desktop computer.

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#1
January 13, 2011 at 13:15:13
Did you power down the computer and projector before you tried this?

Why did it take me over a year to phone in a problem to ATT?


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#2
January 13, 2011 at 13:22:21
the computer was on but the projector was off - should they both be off?

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#3
January 13, 2011 at 18:01:17
Monitors were never meant to be a plug and play product. Some people get away with connecting them hot while others burn up stuff.

I'd power off both and try again.

Why did it take me over a year to phone in a problem to ATT?


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Related Solutions

#4
January 13, 2011 at 19:08:33
On desktop computers, Windows usually only enables one display by default.
In that case, you need to go into Display Properties and enable the Projector's display

(On laptops, some will automatically enable the display of whatever is plugged into the VGA port, some won't. Laptops that don't do that automatically usually have a specific key combo you can press to toggle built in display / external display / sometimes both - see the User's or Owner's manual. The following also works on laptops. )

E.g. in Vista or Windows 7, RIGHT click on a blank part of the main desktop screen, select Personalize, then Display Settings

Hold your cursor over each of the two displays. One will say "Not Active".
RIGHT click on that display, click on Attached to enable it. There will be a checkmark beside Attached when you RIGHT click on that again.

The projector (or whatever is plugged into the second VGA or DVI port) display will be retained by Windows as long as the cable is still plugged in while Windows is running after that, but if you unplug it and then use Windows with it unplugged, you will need to enable it's display again after the next time you plug it into the computer.


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