Well, I'll make a wild guess and say you need to install the d3d8.dll file found in your
Win_8_10_Support folder in DW/RA's main folder.
This isn't hard to do but it can be tricky. Open the Win_8_10_Support folder and copy the d3d8.dll file out to your desktop. Click on the file you just copied and drag it into your main DW/RA folder.
The trick to installing the d3d8.dll file is that if you can see your DW exe file and the dll in the same folder, you did it right.
Meanwhile, if you've already installed some type of shell program to run DW in Windowed mode, the d3d8.dll file should
not be used.
You could also try highlighting the entire [Graphics] section I posted above and pasting it into your dangerouswaters.ini file, replacing the old [Graphics] section. Again, only use NOTEPAD to do this edit.
If none of that works, you may need to play around with Windows10 compatibility mode and/or Admin settings. I didn't need to do this in Win10(64 bit) but its possible.
Good luck.
