I did a bit of googling on your problem Gogeta and didn't find much. The only suggestion I saw that
might help was:
Try a different DVD drive. It is possible that your current drive is malfunctioning or just plain too old to read a dual layer DVD. From what I read, cod4.exe is not used when you run the game, it is only on the DVD and only used during installation.
On a kind of bright note, you can purchase a new DVD drive for about $25.
Link at Newegg.
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