Well most of you might get this problem, once you open to play AC3 you get a black screen saying something like “Cable Not Connected” , “Input Not Supported” etc. Well theres not much help in the internet either. But on the urge of giving up on Assassins Creed 3, I quite unexpectedly found out a way to get rid of the problem.
Step 1 (Skip this f you have already done this) – Open AC3MP.exe. (Yes the multiplayer will work.)
Step 2 – Exit Multiplayer Mode and go to your Windows “My Documents” Folder and open the folder ”Assassins Creed III”.
Step 3 – In that folder you will find a config file called “Assassin3MP.ini” , Open it and you will get a window like this,
Once you get it copy the text that I have highlighted in the upper image. (the line MonitorDesc=)
Step 4 – once you have copied, open the config file in the same folder ( ”Assassins Creed III”) named “Assassin3.ini” and window like this would appear,
Step 5 – Once it is opened you can find the line “MonitorDesc=“, once you’ve located it, erase the line and paste the line you’ve copied from Assassins3MP.ini earlier.
Step 6 – Save Assassins3.ini file and open AC3SP.exe and PLAY!
Still have any questions? Fell free to ask any.