- Unplug the cable from both the document camera end, if possible, and the computer end. Then plug them back in.
- Close and reopen your document camera software after that.
- If you are using Visualizer and the wrong camera is showing up, IE your laptop's built in Webcam, click on the Menu button in the upper right corner. (Looks like a piece of paper with horizontal lines).
- Click on the Select Camera option, there is a drop down menu on that page to choose which camera Visualizer uses. Switch to the other option available as that should be the doc camera.