i just change from a cosaw 550w to a ocz fatality 500w because of the buzzing. but hell it still buzz. but this time i notic it buzz after i conected my hd 5770 but not before(i think) could it be my gpu the one making the noise? but ebuyer say the corsaw is found to be faulty and refunded me... wth? geez anyone know what the problem is?