Magikjak
It wasn’t something I kept running, just a shortcut that would run the batch file and kill anything that wasn’t responding at the time. I’m not sure if this uses the same command I had set up at the time, but I remember it having a 100% success rate. I had it for one game in particular which would crash and stop responding but any attempts to get to the task manager (even with keyboard) would fail.
I haven’t had to use anything like this since Windows 10 as now you can just press Windows+Tab and move the task to a different desktop and then get into the task manager on your original desktop.
It was something like this. It would just kill all tasks that haven’t responded in X amount of time. Obviously this is not a great solution as it can cause data loss and you could accidentally close more than just the program you intend to close, but sometimes you have little choice.
A while ago I kept a shortcut in the taskbar that ran a batch file that killed any unresponsive task, worked even on those tasks that Task Manager can’t seem to close. As long as explorer was still running and I could alt tab and press that button it worked 100% of the time