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Thumping sound whenever videos are played

By LonnieD
Jan 28, 2016
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  1. Hello,
    Hopefully someone can help with this problem I am having.
    Whenever a video starts there is an annoying thumping sound. This also happens momentarily when I plug in an external drive or go to file explorer and click on a drive.

    I have a HP Pavilion dv7 Notebook PC, i5 CPU, IDT High Definition Audio CODEC

    Thank you.
     
  2. Cycloid Torus

    Cycloid Torus TS Evangelist Posts: 1,657   +309

    Thump is from the stereo speakers or the system speaker (if there is one)
    <if from a HD, suspect mechanical failure soon>

    Guessing - power management turns HDDs off to save battery so they are usually off

    Test - check voltage levels and ranges when you start a video; plug in external HD and use explorer to look in a HD
    Test - check SMART status of HDs (I use HWInfo and SpeedFan)

    Theory - accessing HDD places demand on electrical system which causes a strong change in voltage level at the speaker.

    Anything look unusual? Have you done anything which could result in a wiring error (ground loop)? Is the battery beginning to fail?


    Test - set power management to leave HDD turned on when plug into power adapter - plug in power adapter

    Try the things which make it thump - does it still thump? If it stops thumping, then it may be a weak battery (replaced by connection to different supply).
     
  3. LonnieD

    LonnieD TS Rookie Topic Starter Posts: 49

    Thank you for responding Cycloid Torus. I believe the sound is coming from the speaker. The hard drive is less than 6 months old.
     
  4. Cycloid Torus

    Cycloid Torus TS Evangelist Posts: 1,657   +309

    That's the good news!!
    Now lets see if we can find an electrical issue.
     

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