Computer making a "whining" electrical noise

[LocustHorde]

being that I put the thing together about a year ago, it shouldn't pose much of a problem opening it up lol.. I just never seen something (or should I say heard?) like this before.. It does sound like it's coming from the PS

[Josem]

1) figure out where noise is coming from
2) replace part
3) ?????
4) profit

[imsobroke]

Do you have onboard speakers? I had this problem with some POS units at work. I disconnected the onboard speakers and the annoying noise went away.