no audio output device is installed

After i installed vista sp2 and rebooted,it started installing the driver software for sigmatel high definition audio codec.Then a new window pops out and say it failed to install because a device attached to the system is not functioning.Now,i can't hear any sounds.I'm using a laptop running window vista home premium 32 bit.Any help will be appreciated.


Windows Forum Admin
Staff member
Premium Supporter
Try rolling back the driver..

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