Hi,
1. What is the version of Windows 7 you use?
2. Is it a 32 bit or 64 bit computer?
3. What is the exact error message you receive in compatibility mode?
4. What is the edition of civilization 4 game on your computer? e.g civilization 4 Gold, complete, colonization.
5. Who is the manufacturer of the game? 2k games or Take-Two Interactive
All editions of Civilization IV are compatible with Windows 7 32 bit computer. Refer the below link:
But, only limited editions of Civilization IV are compatible with Windows 7 64 bit computer
Check the link below:
To work on this issue, follow these steps.
Step 1:
Try to install any latest patches or updates for the game from the manufacturer website and check if it helps.
Step 2:
If it does not work, contact the game manufacturer for further assistance.
Hope this information is helpful.