Acer and no sound

hey all i am back and well now i think i sould just cry i when out in are mad rush
for the internet,pc,games e.c.t i got my self are acer computer
well that is were i went worng so i thing anyway
i installed are old g/card i had in my old pc and it when find in that pc so i know it is not the card but after about 10 to 15 mins in game the sound goes not just for the game but all sound goes even the shut down song {well just like are 2 to 3 sec thing} so if anyone out there has one of these damm {hell spawn pc’s}
and had the same thing and fixed it or you might know how to fix it plz help.


just when i play game’s it happen’s