could you please flip over the machine. there should be as white sticker. Could i please have that model number.
Also let see if you have had a driver update that is causing the problem.
Use this link below to help you access your reliability monitor. I want you to start on the day that the sound started. Look to see what change where made to your system that day. what is there?
http://www.vistax64.com/tutorials/69535-reliabilty-monitor.html
