Went to sleep last night after being on the pc, come on this morning to find that my headphones are making an awful high frequency sound almost like bagpipes, its giving me a headache not just because the problem but the sound it almost as irritating as nails on a chalkboard. Nothing happened between me last using them to cause this. Ive taken out every port, checked all the connections and im lost. Bought them from amazon too so I cant even get a replacement as they wont take their recipt for warrenty. Any ideas what it could be, or anyone have any similar issue?