Always made ​​strange noises

When I run windows 7 is often made ​​strange noises. I am very troubled by this voice. Would you tell how to solve it ?

 

Hi Peggy,

Parallels Tools which includes the audio drivers could be corrupted. Try reinstalling it : http://kb.parallels.com/4841

And here is another suggestion on Sound issues troubleshooting : http://kb.parallels.com/112477

Thanks,

Manoj D