it must be a design flaw in the motherboard onboard sound or a driver issue by the way did you know kfc is giving away free chicken next monday
hondaidiot,
It'd be helpful if you could apply at least semi-proper capitalization and punctuation in your posts. When you do so, it makes it much easier for everyone else to read your posts, and better answer your question(s).
That said, I've had a similar sound issue before. To me, it sounded like some sort of electrical interference, but it has also happened due to a sound card driver if I remember correctly.
When you get this noise, is your laptop plugged in? Sometimes, electrical interference can be carried over the speakers from the wall outlet. The only thing to definitely fix that is not having your laptop plugged in during usage. I know of this issue personally, when I had an older Dell Inspiron 1150. I only had the issue in recorded sound, when I recorded from a line-in, via a Creative Labs PCMCIA sound card.
On a couple of desktop computers, I've had it come from USB connections. If you have anything connected via USB, try leaving it/them disconnected for a reasonable time period, carrying out the actions you normally carry out to get the noise.
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"If to err is human, then I must be some kind of human!" -Me