Silent Hunter 4 Patch 15
After racking my brain out trying to get Silent Hunter to run on Windows 10 I solved it. Probably will work for windows 8 also.
Dec 21, 2015 Patch 1.5 Silent Hunter 4: Wolves of the Pacific. Ah, here's a way for you to confirm. In the patch notes for 1.4, there is this item 'Screenshot names now contain the date they were taken on'.
What I did was go to the control panel and select my Graphics card icon (Nvidia in my case) open it up and select 3G settings. Come down to Silent hunter in the games. Select that and then change every 3D setting I could to 'OFF'.
Opened the game and it ran fine. Silent Hunter didn't like any 3D settings. Anyway I hope this helps somebody. I've got my games back!
Silent Hunter 4 & 5 now run like a champs. After countless hours of trying everything I could of, I was just about to give up on the old games when I read your post. And bang, it worked.
Thanks so much for posting this. (Win 10 on an HP i7 12gb 17' laptop.).