Lastly, my PC turned on again for a long time. I left TS and could talk to my colleagues quite normally. Then I downloaded Steam again with CS: GO. After I made some adjustments in CS, my MIC suddenly stopped working. Have checked everything as well as everything but nothing helps. My MIC is recognized but I can't talk in it. On the PS4 it works quite normal as usual.
Strange that I had even with my 7 Euro Cheap China microphone never had problems and that even with old laptop with Windows XP in onboard sound card.