Hello!
I'd be happy to help you troubleshoot launching GF II on your system. To better assist you, could you provide me with some more details about the issue you're facing? Specifically, let me know the following:
1. What specific error message or behavior do you encounter when you try to launch GF II?
2. Which version of Windows are you using?
3. Have you tried any other troubleshooting steps apart from changing the compatibility settings?
With this information, I'll be able to provide you with more tailored assistance to resolve the issue with launching GF II on your system.