1. JW Harris's Avatar
    Thought it might have been a sound card issue, but I plugged in headphones and the squealing remained. Is this normal? This is not a slight noise, it sounds like a smoke alarm going off.
    Last edited by JW Harris; 09-18-2015 at 02:55 PM.
    09-17-2015 06:57 PM
  2. ven07's Avatar
    Not during install, but some users did have issues with sound

    Edit: Might be down to drivers
    09-17-2015 08:05 PM
  3. Steve Thackery's Avatar
    Depends how loud it is. Believe it or not, most SSDs make a faint squealing noise when there's a lot of disk activity. I cannot imagine the mechanism by which solid-state surface-mount electronic components can make a noise, but they do. Installing an OS involves LOTS of disk activity, so my bet is that it's from the SSD, and is benign.

    Also, some switched mode power supplies (i.e. the ones we use in our PCs) can make a squealing noise depending on the exact load placed upon them.

    Personally I wouldn't worry about it.
    ven07 likes this.
    09-18-2015 07:45 AM
  4. JW Harris's Avatar
    Very loud, like a smoke detector going off...
    09-18-2015 02:56 PM
  5. ven07's Avatar
    Are we talking about speakers or the harddrive (as Steve mentioned)
    09-18-2015 03:04 PM
  6. JW Harris's Avatar
    Plugged in headphones and the sound persisted, so I am thinking not the speakers
    09-19-2015 03:19 PM
  7. Steve Thackery's Avatar
    Ah hah! I've had a brainwave: it's your CPU fan.

    As far as I know, it's the only component capable of making such a row (apart from through the speakers, obviously). My guess is that when the processor is having to work harder than normal (which it does during the W10 upgrade), the fan is kicking in (or speeding up).

    Squealing fans are very common - the cheaper ones use plain bush bearings. When they dry out they squeal.

    My best guess, anyway!
    ven07 likes this.
    09-20-2015 05:23 AM
  8. astondg's Avatar
    Is it a squeal of delight?
    09-20-2015 11:40 PM
  9. Peter McNeill1's Avatar
    My crappy Lenovo laptop has done that on occasional builds. No idea what causes it, so loud it can wake the dead. It is not a fan. The install gets stuck when it happens and I got bad sectors after having to just shut the laptop down.... heating issue perhaps?
    09-21-2015 12:24 PM

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