there are many things on the net mostly which dont work. i found a eady way.go to device manager and click view-show hidden devices. under non plug and play, disable beep and restart.
how to stop ur motherboards piezzo speaker
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Simple trick ; I knew this before .................lol what is eady ?? a typo ??
anyways good tutorial.................nice for newbies
anyways good tutorial.................nice for newbies
Thanks
A more elegant solution involves a wire cutter and some duct tape 
On linux: "sudo rmmod pcspkr"
Thanx