Lastly, maybe the game isn't installed correctly. Reinstalling the game could help, ensuring that it's installed on the same drive as the CD (if applicable). Also, checking for any missing or corrupted files through the installer might help.
Another angle: sometimes the game's .exe or shortcut gets misconfigured. The user might need to create or modify the shortcut to include the "SETX" command line to point to the installed directory. That's a common fix for COD4 on modern systems because it uses different CD drive letters now, especially if UAC is enabled. call of duty 4 please insert the correct dvd-rom hatasi
If the disc is damaged, that's another problem. The game might not recognize it. They should check the disc for scratches or try another copy if available. Lastly, maybe the game isn't installed correctly