Windows 7 Sound issue- error 1722 recovered

Problem

I Lost my sound- Got the below error when starting services->windows audio endpoint builder

 error 1722 the rpc server is unavailable

My solution

For some reason my "Power" service was off .

Start the "Power" service and then start "windows audio endpoint builder" and" windows audio" service -  now my audio services started and I got my sound again back.