Please explaiin how to get logon and logoff sounds to play in Windows 8. Registry keys have been changed to show Windows logon and Windows logoff. The correct sounds have been located on my hard drive and play when you hit the test button. Does the sounds scheme need to be changed? If so, to what? In any case the chosen sounds do not play when Windows starts and stops. I would be really grateful if somone could explain how to do this. According to various sites I have visited this is possible.

Thank you very much for your help.