hi pc is asrock mb, on board sound, running vista premium 64bit. well can you work this out i unpluged the speaker plug the other night to use in another pc , pluged back in today no sound . ive tried headphones to no sound why?onboard sound shouldnt just fail should it ?. i thought perhaps driver problem so i used the realtek driver software got with mb and setup that . that was big mistake before i was using vista drivers sound worked fine until i unpluged . any way i loaded realtek drivers from mb disk and it loaded loads of other crap too one program called skytel and i couldnt disable it in win defender. so i tried uninstall and it left lots programs running so in the end done system restore and they all went . so do you think its onboard sound gone wrong? i noticed windows has done some updates too could these be sound problem?.