Question about Optoma EP721 Projector

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My Optoma EP721 will not recognize the display from my Lenovo T400 notebook.

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  • jlundblade Oct 04, 2009

    You will probably have to press a button combination like FN and one of the F1 to f12 keys, one of them will switch between internal display, external display, both.


    FN + F7 is the combination that should switch between displays, but in this case, it makes a chiming noise and nothing happens.


    you should have picture on the projector, if you don't then right click on your desktop and select properties or adjust resolution.

    Then on the properties page find the last tab, which says settings, then you should see something like this.



    right click on number 2 and select attach, your background should appear on the projector, you can DRAG windows and files into the projector from the Right side of your screen.






    This works - sometimes. But what I want to do is project what's up on my notebook onto the projector. Is there a driver somewhere that I could download?

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You will probably have to press a button combination like FN and one of the F1 to f12 keys, one of them will switch between internal display, external display, both.

you should have picture on the projector, if you don't then right click on your desktop and select properties or adjust resolution.

Then on the properties page find the last tab, which says settings, then you should see something like this.

My Optoma EP721 will not - b61c93f.jpg

right click on number 2 and select attach, your background should appear on the projector, you can DRAG windows and files into the projector from the Right side of your screen.

Posted on Oct 04, 2009

  • Ekse Oct 04, 2009

    look over the advanced settings in the display properties, there should be a setting for the external display somewhere, if there are options set it to Clone so both displays show the same picture.

    If you have the IBM's own drivers on the laptop those should do fine. Depends on what video card the machine has. would need the exact model of the laptop from the bottom to figure out what it has.


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