It is difficult to provide a specific answer without additional information. However, possible reasons for being unable to install PrintMaster 17 Silver on a PC could be compatibility issues or software conflicts. It is recommended to check the system requirements, ensure the operating system is supported, and try troubleshooting steps such as running the installer as an administrator or disabling any conflicting programs. If the issue persists, contacting customer support for PrintMaster or seeking assistance from a technical expert might be helpful.