New dell; couple of problems

I recently bought a Dell (lol); after a couple days use, I get a horrible screeching noise anytime anything makes a sound (music, video, etc). Any way to fix this? I've looked for new drivers for teh card, but I've found nothing. :\

Also, for some strange reason, my cable connection seems to be capped at 242kbps down and 34 up. Any way to remove this stupid cap? I've fiddled with the network card's settings to no avail.

HALP :(

Yeah, I've had problems with every sound card I've got in a Dell. I don't know what's up with them, but I got the horrible screeching noise in one, and with the other, it was making games LAG. Srsly, I replaced the sound card and everything was smooth.

Secondly, I really hope you mean k/s and not kbps. If so, that's normal, and your service provider just isn't that great. :/