Hey there,
Sorry to hear about your troubles. You might try looking in your steam folder for the game to see if there are any error messages logged there, (UnhandledExceptions.txt or similar). That would probably be in your steam folder for the game (on my computer it is C:\Program Files (x86)\Steam\steamapps\common\ai war fleet command), along with your settings.dat file. You can try renaming settings.dat if that doesn't work, to see if maybe that was corrupted due to a disk error on save or something similar.
If you've reinstalled the game and that didn't fix it, then either settings.dat must be corrupt, or some part of .NET itself must have been corrupted. You can always reinstall .NET if all else fails, but I'd be worried about hardware issues if you're finding corruption there. Actually, with a bluescreen like that, it's something where I would recommend you do a test of your RAM with something like memtest86, or a disk scan with scandisk, just to make sure this isn't an early warning sign of a failing memory module or hard disk.
Hope that helps!
