Kovich

Sound is merely a rapidly time-varying pressure AC component which combines with the DC atmospheric pressure via linear superposition (i.e. they simply sum together). A Sound Pressure Level of 120 dB represents an AC RMS pressure of 20 Pascals (you'll need your industrial ear defenders!). However, as the average pressure of a noise signal is actually zero, then the net force on your laptop will be also be zero. Edit: Which of course means that any laptop will do.