the sound of my laptop is not working. while staying arrow on speaker icon it shows "no output device is installed". I have tried many things update driver, enable disable thing, changing the window but all in vain. actually there was screen display problem . when i got my laptop repaired ii faced this problem. I asked the repairer to check if there is connection problem with speakers he said no issue . what to do plz help.
i have gatway laptop model NV57H and windows 8.1