I am using laptop HP DV3t 2000, the volume has stopped working suddenly. I checked in "Sound, VIdeo and Game Controllers" in control Panel, it says it works properly. One thing is when I press volume button from keyboard, the light color doesn't change into blue (it should change into blue), but it changes from mute to unmute in the icon "Speaker and headphone" in the menu bar. I don't know how to fix it. Can anyone advice me what should I do? Thank you very much!
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