I googled the problem and found out a solution.
This might help u too - if u have the same problem- but you better be careful to follow the instructions carefully.
In other words,
CLICK ON START - YES, that button on the bottom left hand side.
Next Click RUN
then you;ll see this:
Then click on the SOUND button
Click on the "BEEP" and change "Yes" to "NO"
Just a word of caution. I don't know whether this affects the safety beeping function - the one you get when you get a system failure warning message - like when your CPU overheats.