Yeah, as long as other games work while CiC doesn't, it's almost certainly an issue with CiC itself. The fact that you can't open other RPG Maker games after trying to open CiC makes it very likely that CiC is starting to some degree. You can't open two RPG Maker games at once, so CiC is probably running in the background, preventing other games from opening. (You could probably fix this by closing the process in task manager, rather than turning your entire computer off.) I will once again request you check for the game in task manager after you try and open it.
Also, this means if you try running the game and it doesn't work, then try one of the solutions and try running it again, it will never work unless you close the game with task manager or restart your computer first, because the game is technically still open. So because of that, you may want to retry the previous suggestions of moving the game to your desktop before running and running as administrator after ensuring the game has been fully closed.
I've found reports of a similar issue that was caused by some sort of bug occurring with multiple monitors. If you have multiple monitors, the solution was apparently to unplug all but your main monitor, and then run the game, so you could try that.
Additionally, after you try and start it if you press alt + tab and then hold alt, is there a window for CiC open somewhere? It would probably be on your taskbar if this was going to work, but it was suggested to try.
If those don't work, the most likely culprit is that it's a plugin issue. Unfortunately, this is also the biggest headache to troubleshoot, as my game has over 100 plugins, and there is no error message to go off of. The only somewhat reliable guess I have is that it's a recent addition, since I believe this is the first time anyone has reported this issue. So I've made a patch to turn off some recently added plugins.
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Please try the patch after the other two possible solutions above. Even if the patch works, you'll end up playing a version of the game with several plugins turned off, which will be bound to cause issues. I'll have to mess around and figure out what plugin in particular causes the issue.
