I read the manuel.  I checked the cords.  I can see my desktop come up on the projection screne when it boots, but then it goes away.  Syncronizing doesnt work, select source doesnt work.  trying to chat with a dell tech doesnt work, (I'm considered a business not home user, we don't get that luxury.)

 

WHAT NEXT?  Whats the problem?  Can I not hook a laptop to the projector and see my desktop on the projector screen by just hooking them together?