1. Oh I'm sorry. Restart is for 'Windows Audio' only.

   'Plug and Play' - If you notice any of the following, please report to me.

       - Startup type : Disabled

       - Service status : Stopped

3. The probability is that is integrated audio device. It is a recent trend. What is the product name of the laptop?

4. Maybe not overclocked because you have no idea. Go on to the next step.

5. Use only as a last resort.