I bought a PC from a guy off of an app and it came perfect but when I turned it on I noticed the audio wasn't connecting . It has a red x on the audio symbol. Headphones do work but it does not connect to anything else. I have tried to use the Microsoft bot service to see whats wrong with it and it keeps saying my audio is disabled but when i enable it I am still stuck with no audio. If you know how would I go about fixing it please tell me because this is really annoying.