The issue you are facing with the "HiP2P Client" program on Windows seems to be related to a camera being connected but not displaying any video. Unfortunately, without more specific details, it is difficult to provide a precise solution. However, you can try troubleshooting steps such as checking camera connections, updating drivers, or reinstalling the software. If the problem persists, it might be helpful to seek support from the developer or refer to the program's documentation for further assistance.