I have a lenovo y50p and the speakers were working great out of both speakers, until, I plugged in a USB headset device that only has one headphone on the right side. After I unplugged the headset, only the right speaker will work now and nothing I have tried has helped. I tried googling it, but all I was getting was the 'right click sound icon->playback devices->right click speakers->properties->levels->balance' solution which does nothing for me because it says the speakers ARE balanced. I just want my left speaker back.
Also, since my left speaker disappeared, my overall volume have gone way down and audio is very muffled sounding.