I could use a bit of advice trouble shooting my wife's laptop. A few nights ago, she received a shock through her ear-buds connected to her laptop, after which the sound stopped working. She rebooted the computer and everything seemed to work fine again, until today when the sound crapped out once more. I am 100% positive that nothing is muted, have rebooted the laptop twice, and re-installed the audio driver with no luck. The speakers produce no sound, while the audio jack produces a buzzing through headphones. Is there anything else I can do, or should I assume that the sound card is fried? The laptop is a Toshiba Satellite C655 running Windows 7 Home Premium. Thanks in advance.