Turn on the driver to see if the pen device is connected. If it shows that it is not connected, uninstall the installed driver, reinstall and check whether the driver pen device shows a link. If the drive shows that it is connected. If the pen does not respond, a major factor is that there is a problem with the pen. Change other computer connections to see if the same problem drives the display pen link, the pen does not respond. The same is true for other computers. There is a problem with the pen. Contact the dealer where you bought it and replace it with a new pen. The active pen can check whether there is no electricity and needs to be charged (no light is on or the light is flashing and needs to be charged.)