The BiLPDService use the 515 port as default for LPD.
If the BiLPDService cannot listen on 515 port, it is most like used by a third party application or Windows LPD Service.
Please check what application uses port 515 on system and stop Windows LPD Service or the application.
To check what application uses port 515 perform the following steps:
Run cmd (Command Prompt) as Administrator and type the following command:
netstat -anobp TCP
The netstat -anobp TCP command list the all port that using application on computer.
if the TCP 0.0.0.0:515 is not BiLPDService.exe, close the application and start the BiLPDService