Mankind

So just last night randomly my Laptop has started sending out a REALLY LOUD buzzing/windy sound, it kind of sounds like an alarm. It appears to be the audio jack because when I tried them normally through the laptops internal speakers it does it, and then I plugged in some external speakers, it still did it through the external speakers. Wat do? Any help would be appreciated, thanks!

Yeah 3.5 jack, sorry I should have mentioned

Hey guys, long time lurker first time asker. So today my Creative T3300 speakers arrived, got them all set up, then after about 3 minutes of music, my computer just reset to the POST screen, loads up windows again, then windows tells me its recovered from a blue screen. So I take out the speakers and try them in my phone, they work fine in my phone for a good 30 minutes that i tried it for. Now whenever I put it in my PC they will work for about 1-2 minutes before my PC freezes or just crashes. Any help would be appreciated!