How do i check if i got Mumble on??

I don't even have the voice chat on, i don't have a mic... i'd add a photo of my settings but i don't know how...

Here's the thing: Everytime i'm in a battle, i can't complete it cause at some point the game goes off randomly and this stupid error appears:  Cheat Dedected! Game will exit now. Cheat attempt was logged. WTF??? i NEVER cheat!! So i tried like 7 topics all with the SAME ...