Originally Posted by Manansala

No, it's just stress.
Your buzz will only last not more than 30 minutes and it'll be gone. That buzz is caused by hardware failure over devices that requires more power than the usual. e.g. HD only requires 9v and you've been using your HD for longer hours, it's extending it's 9v to 12v. Now when you turn your machine on, it buzzes coz the power supply is only giving it 9v (coz that's what the power supply knows) while the HD is requiring 12v due to overuse. This applies not just do HD, mostly fans etc..

This happens to many devices, not just computers as well.

I hope I made a nice fact.