Nov 17, 2008 #1 V VULVAH New member Nov 17, 2008 2 0 1 After i installed my laptop acer extensa 4220 with windows xp and upgraded to vista, i had a yellow exlcamation mark on the audio device on high definition audio bus which lead me to no sound from the laptop. thanks.
After i installed my laptop acer extensa 4220 with windows xp and upgraded to vista, i had a yellow exlcamation mark on the audio device on high definition audio bus which lead me to no sound from the laptop. thanks.