If anyone tryed most of the solutions online to fix theyr microphone but nothing seems to fix it I fond a solution and the reason why that happens.After further tests,it turned out it was Razer Cortex. When you choose System Boost-Scan-Clean it will mess your michrophone in DayZ not sure why. But for me this was the issue. I fixed it by Reseting the PC (reinstall windows). I tested the Mic with Razer Cortex installed and as long as I did not pressed System Boost-Scan-Clean,my mic was still working,once I "cleaned" my PC,it did not allowed me to use the Mic in game. Hope this helps some of you out there.