Interactive Flat PanelsWhat do I do when my pens are not responding?

It might not be your pens at fault. Look in the system tray of the PC (bottom right hand corner), look for the Activmanager icon (orange man holding a flame). Is there a red cross over the activmanager? If so there is no connection between your PC and board, which is why the pens aren’t working. Take the USB cable out of the PC and reinsert. Wait a while. See if that fixes it.
Let us know.
Thanks & Rgds