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Try the following:
- Recalibrate your pen.
- Make sure nothing is blocking the signal between the pen and the interactive pen receiver on the projector. See Projector Parts.
- Make sure the pen batteries have enough power. If the light on the pen doesn't turn green when you press the button, you need to replace the batteries.
- Dim the room lights and turn off any fluorescent lights. Make sure the projection surface and the pen receiver are not in direct sunlight or other sources of bright lighting.
- Connect the USB cable directly from the computer to the projector, not through a hub. Make sure the USB cable is securely connected to the projector and computer. Try disconnecting and reconnecting the cable to your computer.
- From your operating system's Display utility, select Settings > Advanced > Troubleshoot, and set Hardware acceleration to None.
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