crackling??!!??!!

[Sharki]

omg i cant take it anymore, ive had this crackling noise since day one of my new build.
im currently using an E6600 on a Asus P5B and using the onboard sound (for now)

im getting this annoying crackling sound, from what i know its from the green jack only (main audio jack or watever it is)

im using the speedlink Medusa Pro Gamer Edition, ive tried it with several headsets and i still get the problem so im convinced its the onboard sound.

ive been googling it n a few people suggest new drivers but im up to date, a bios flash but that went horribly wrong n others suggest say turning down the stuff in the soundmax panel till it goes away, but when i do this it causes me to lose the sound of which is infront of me (on css which is incredibly horrible in matchs).
if i mute the front audio or green jack watever it is i get rid of all my msn sounds etc n it just anoys me

what do i do?? just buy a nice soundy card???

 

[Sharki]

Could just be a Bios issue... i know there is an issue like that on the P5N32-E... might be the same for the P5B. Flash bios

i attempted to flash bios...
the pc switched off and never to turn on again until i removed the sata cable to my main hdd then it what power up n say overclocking error or something
tried it again n did the same

lol i also have no fones sept my mobile anywere near me

thing is its the green jack only, the front speakers for the medusa's is powerd by the green jack, if i turn it off by the control thing on the wire the buzzing goes

 

[Sharki]

well my computers right next to me pritty close so could that be the problem??? ive had my mobile away from my pc all day n its still crackling