I bought a lepa maxgold 700w GM series from newegg. Works fine and powers my whole system, but makes a loud high pitched noise that gives me a headache. I then bought a corsair 750w that doesnt make a high pitched sound, but a sound comes from the fan which I dont mind. Though, I bought the corsair one for my girlfriends computer. My old rosewill 750w gold certified doesnt make ANY sound which I find funny. Is the high pitched noise normal? should I complain to newegg and request a new one? Or should I return it and exchange for a different PSU? Can I fix the high pitched noise?