SOURCE: Projector powers up as normal, bulb comes on,
There is a source lock and source button I would unlock source lock button and the push source button until you get to your hdmi input you are using. You also may just plug in one input first and once you get the input right play with the multiple hdmis
SOURCE: Optoma Projector Only Displays White Screen
did u use your function key on your laptop?or did u configure your graphic card so that the output of your computer can be recognise by your projector?or do you try to use your contrast or brightness control at your projector?
SOURCE: we are using windows 7
Probably FN and F5 key or whichever key controls your display routing.
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