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Annoying high pitched sound coming from my pc?

Discussion in 'Hardware' started by mcroger, Oct 31, 2012.

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  1. mcroger

    mcroger Thread Starter

    Oct 24, 2012
    I hear a really high pitched sound coming from my computer, specifically my PSU.
    I can only hear it from certain angles, but it is really annoying after a long time of putting up with it. How do i diagnose where the sound is coming from and if it's the capacitor or the fan?

    The sound goes away when the PC is off.

    Any help would be appreciated.
  2. managed

    managed Trusted Advisor Spam Fighter

    May 24, 2003
    First Name:
    This sort of high pitched noise is usually a vibrating coil. Unfortunately coils (aka inductors) are common components on motherboards, graphics cards and PSUs.

    Are you 100% sure it's coming from the PSU ? If so there's not much you can do except try to ignore it or get another PSU.

    It could also be a worn fan bearing. Try to locate it exactly.
  3. jamesx121


    Apr 22, 2008
    you can check the fans by removing the side panel
    turn computer on.
    apply light pressure to each fan one at a time as it spins.
    push in the middle where the fan hub is.

    if the bearing is worn the sound will change.
    for the CPU fan I wouldn't press in on fan hub.
    if you have access to the fan blade-- just very lightly touch the blade as it spins.
    see if the high pitch sound goes away
  4. replay


    Aug 12, 2003
    had a few of the high pitch sound psu's last was a corsair.......... they said it was a bad capacitor........ see if u still have warranty on it and RMA
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