very loud sound when starting up RPi 2

1st Official Post
    Code
    plugin.program.iptv.merge v0.11.5 installed
plugin.program.skymashitvwizard v2.0 installed

    I'm not 100% sure but in the Official:Forum rules / Banned add-ons

    3. Wizards

    All Wizards and addon installers

    Edited once, last by blueribb (November 27, 2020 at 11:09 PM).

    I had de-installed the addons, no success, the sound came back when I booted.

    I did a new installation with the "LibreELEC-RPi2.arm-9.80-nightly-20201121-1e75df4.img.gz" and the sound is gone.

    But I couldn't make WiFi settings with this version, so I first had to install "LibreELEC-RPi2.arm-9.2.6", make WiFi settings and then update to the nightly.

    Now everything is going well, the sound is gone, without addons.

    If I change the resolution of the surface (1080i ..) then the loud long sound comes back, with a now clean system without addons.

    When I try to fast forward a video file, the loud sound, black screen and that's it.

    I give up and go back to V18 there everything is ok

    Today I have the version from November 29th. tested and it looks better. No loud sound and I can fast forward the videos, so everything is ok.

    It wasn't an update I installed the img.gz maybe it was because of that.

    I still can't make the WiFi settings.