my notebook's speakers are not working

i reformatted my computer and now when i try to play music it's not making any sound. i tried my sounds on the control panel and it said "you have no audio output device installed". halp please.... my notebook is gateway M320

go to control panel then add new hardware and install your audio device might be a few more if you formatted your computer so reinstall them all...sometimes they take a few windows updates before they install...

HAVE FUN