Solution : Error "Audio Not Working" In Windows 7

Windows 7 is good to use but sometimes few unexpected errors freak me out. Recently when i started my computer my speaker stopped working. I was thrilled and i checked the wiring but every thing was fine. Then i opened the troubleshooter but it did't open and the speaker icon in the notification area had a red cross over it. But after searching a bit i found a trick to set my PC right. I have given the instructions below follow them if you are getting the same problem.