High pitched whistle coming somewhere from PC

By MCKejml
Nov 15, 2014
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  1. Now, I know this question has been asked quite a few times, but the results always vary and it appears really dependent on the hw. So:

    Recently, I have been hearing an interrupted high pitched whistle from the case. It is not too loud, but interrupts when I need to ex. read something and concentrate. It is not a singular long beep, but series of small beeps.

    When I opened the case, I tried to listen where it goes from; it does not appear to whistle from the electric source; and CPU / Graphics / Net card / Motherboard are too close to each other to properly determine. I tried to listen with a straw, but it always appears to emanate from someplace else when using this method.

    I tried to dust everything, firm the screws, nothing helped. The issue started about two or three weeks back. I purchased the PC about a year ago and the user have not reported anything similar; the last change was adding a new CPU fan about four months ago.

    The Rig:

    Mobo: ASUS M4N78-AM SLV1004
    CPU: AMD Phenom(tm) II X6 1055T Processor
    CPU Fan – Coolermaster Hyper 212+ Evo
    Ram – 2x2 GB PC26400 AM1
    Vga – AMD Radeon 7700
    FDD: 16 in 1 apacer sln4123
    HDD seagate 250 GB sln E78C
    Cdrom – DVDRW LG sln 5393

    Advice very much appreciated!
  2. tipstir

    tipstir TS Ambassador Posts: 2,473   +126

    That noise could be either:


    Is this system OC = overclocked?
  3. MCKejml

    MCKejml TS Rookie Topic Starter

    Thanks for the reply; no, it is not.

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