Okay so we have fixed the issue/issues.
It seems there were a few:
-Firstly when I updated my Bandicam it appears to have copied a few files so was possibly clashing with the new updated files.
-2nd for some reason, Bandicam was hooking to Minecraft as a Direct11X even though it is an OpenGL game.
-It also appears, for some reason, that a windows update I did seemed to help? Not sure why that is.
we Uninstalled Bandicam and then made the windows update. We then cleared my PC of any reference of Bandicam and reinstalled it, then we unticked Hooking for Direct11X and then it worked. Hopefully this will help anyone else with the same issue and you guys at Bandicam if there's any updates needed to fix the hooking issue.
Thanks for all the help and responding to my questions, glad to have Bandicam back running again