I have recently bought a used Polycom VBP5300-E10. The manual says that you're supposed to connect your PC to the VBP with preprogrammed IP settings in order to configure it. When I do that, the PC can't identify to the device. I can't get access to the serial port, and when I connect the VGA output at the back to a monitor, it says "reboot or select proper boot device", which would indicate to me that there's a problem with the VBP. Can you advise?
have you tried to reset the system to factory defaults?