PowerPoint in the dark. My old projector just doesn't have enough candlepower to be seen. If I turn off the classroom lights and partially close the curtains we can see the projector, now they can't see to take notes. Some of my students got the idea of using head mount LED flashlights. Great for note taking but not so good when they looked up at me. Just like being in the spotlight! The fix? Goose neck LED lights that plug into the USB port on front of the computers we have. Works just fine. Regards, Terry