I am having this issue where every so often, about 50% of the time, when I boot up the laptop (Lenovo T420) the speakers nor headphones work. When I go to the sound settings it says "Dummy Output" and doesn't recognize my speakers built into the laptop or my headphones that I plug in. I tried to fix this with another freelancer and it just cost me 30 euros and no change. Can someone please help?
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I was a Network Administrator for the U.S. Marines as well as several private sector companies. I will find out your issue and have a solution for you. Feel free to message me