ok first off im not entirely sure if this is the right place but im guessing so

(if its not sorry)
ok the problem is pretty simple i think for some unknown reason my headphones have started crackling no i know its definitly not the headphones ive tried 3 pairs

so just as a short term solution i plugged in all my front audio panel (was unplugged for some reason cant remember) all goes well except thats the headphones still crackle well that is to say the left headphone does the right one is completely dead, so im guessing that the front pins have been put into the wrong positions i was just wondering if anyone knew the pin sequence for a "FUJITSU SIEMENS P5SD2-FM Rev 1.xx" motherboard or if theres a way to get the sound working properly from my motherboard, i know a work around is to buy a cheap soundcard but PCI slots arent exactly going spare in my pc if you know what i mean

, anyways i would really appreciate it if anyone has any ideas thanks.