chrome: audio dei video youtube assente

[cruelben]

da un paio di giorni i video in streaming tipo youtube sul mio chrome non hanno piu audio.
Non riesco a capire di che si tratti ho già disinstallato e reinstallato chrome ma nulla non si sente nulla a differenza degli altri browser dove l'audio funziona benissimo.
Credo sia un problema del plugin di flash ma non so che farci, mi sapreste aiutare?

se digito chrome://plugins/ ottengo:


Plug-in (15)
Dettagli
Adobe Flash Player - Versione: 11.5.31.2
Shockwave Flash 11.5 r31
Nome: Shockwave Flash
Descrizione: Shockwave Flash 11.5 r31
Versione: 11.5.31.2
Percorso: C:\Program Files (x86)\Google\Chrome\Application\23.0.1271.64\PepperFlash\pepflashplayer.dll
Tipo: PPAPI (out-of-process)
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/x-shockwave-flash Shockwave Flash
.swf
application/futuresplash FutureSplash Player
.spl
Disabilita Sempre consentito
Chrome Remote Desktop Viewer
This plugin allows you to securely access other computers that have been shared with you. To use this plugin you must first install the Chrome Remote Desktop webapp.
Nome: Chrome Remote Desktop Viewer
Descrizione: This plugin allows you to securely access other computers that have been shared with you. To use this plugin you must first install the Chrome Remote Desktop webapp.
Versione:
Percorso: internal-remoting-viewer
Tipo: PPAPI (in-process)
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/vnd.chromium.remoting-viewer
.
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Microsoft Office (2 files) - Versione: 14.0.4730.1010
Office Authorization plug-in for NPAPI browsers
Nome: Microsoft Office 2010
Descrizione: Office Authorization plug-in for NPAPI browsers
Versione: 14.0.4730.1010
Percorso: C:\PROGRA~2\MICROS~3\Office14\NPAUTHZ.DLL
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/x-msoffice14 14.0.4730.1010
.*
Nome: Microsoft Office 2010
Descrizione: The plug-in allows you to open and edit files using Microsoft Office applications
Versione: 14.0.4761.1000
Percorso: C:\PROGRA~2\MICROS~3\Office14\NPSPWRAP.DLL
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/x-sharepoint SharePoint Plug-in for Firefox
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Native Client
Nome: Native Client
Versione:
Percorso: C:\Program Files (x86)\Google\Chrome\Application\23.0.1271.64\ppGoogleNaClPluginChrome.dll
Tipo: PPAPI (in-process)
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/x-nacl Native Client Executable
.nexe
Disabilita Sempre consentito
Chrome PDF Viewer
Nome: Chrome PDF Viewer
Versione:
Percorso: C:\Program Files (x86)\Google\Chrome\Application\23.0.1271.64\pdf.dll
Tipo: PPAPI (in-process)
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/pdf Portable Document Format
.pdf
application/x-google-chrome-print-preview-pdf Portable Document Format
.pdf
Disabilita Sempre consentito
Adobe Reader - Versione: 10.1.4.38
Adobe PDF Plug-In For Firefox and Netscape 10.1.4
Nome: Adobe Acrobat
Descrizione: Adobe PDF Plug-In For Firefox and Netscape 10.1.4
Versione: 10.1.4.38
Percorso: C:\Program Files (x86)\Adobe\Reader 10.0\Reader\Browser\nppdf32.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/pdf Acrobat Portable Document Format
.pdf
application/vnd.adobe.pdfxml Adobe PDF in XML Format
.pdfxml
application/vnd.adobe.x-mars Adobe PDF in XML Format
.mars
application/vnd.fdf Acrobat Forms Data Format
.fdf
application/vnd.adobe.xfdf XML Version of Acrobat Forms Data Format
.xfdf
application/vnd.adobe.xdp+xml Acrobat XML Data Package
.xdp
application/vnd.adobe.xfd+xml Adobe FormFlow99 Data File
.xfd
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Google Update - Versione: 1.3.21.123
Nome: Google Update
Versione: 1.3.21.123
Percorso: C:\Program Files (x86)\Google\Update\1.3.21.123\npGoogleUpdate3.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/x-vnd.google.update3webcontrol.3
application/x-vnd.google.oneclickctrl.9
Disabilita Sempre consentito
Unity Player - Versione: 3.5.6.44817
Unity Player 3.5.6f4
Nome: Unity Player
Descrizione: Unity Player 3.5.6f4
Versione: 3.5.6.44817
Percorso: C:\Users\Bruno\AppData\LocalLow\Unity\WebPlayer\loader\npUnity3D32.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/vnd.unity Unity Player datafile
.unity3d
Disabilita Sempre consentito
Java(TM) (2 files) - Versione: 10.9.2.05
Next Generation Java Plug-in 10.9.2 for Mozilla browsers
Nome: Java(TM) Platform SE 7 U9
Descrizione: Next Generation Java Plug-in 10.9.2 for Mozilla browsers
Versione: 10.9.2.05
Percorso: C:\Program Files (x86)\Java\jre7\bin\plugin2\npjp2.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/x-java-applet Java Applet
application/x-java-bean JavaBeans
application/x-java-vm
application/x-java-applet;version=1.1.1
application/x-java-bean;version=1.1.1
application/x-java-applet;version=1.1
application/x-java-bean;version=1.1
application/x-java-applet;version=1.2
application/x-java-bean;version=1.2
application/x-java-applet;version=1.1.3
application/x-java-bean;version=1.1.3
application/x-java-applet;version=1.1.2
application/x-java-bean;version=1.1.2
application/x-java-applet;version=1.3
application/x-java-bean;version=1.3
application/x-java-applet;version=1.2.2
application/x-java-bean;version=1.2.2
application/x-java-applet;version=1.2.1
application/x-java-bean;version=1.2.1
application/x-java-applet;version=1.3.1
application/x-java-bean;version=1.3.1
application/x-java-applet;version=1.4
application/x-java-bean;version=1.4
application/x-java-applet;version=1.4.1
application/x-java-bean;version=1.4.1
application/x-java-applet;version=1.4.2
application/x-java-bean;version=1.4.2
application/x-java-applet;version=1.5
application/x-java-bean;version=1.5
application/x-java-applet;version=1.6
application/x-java-bean;version=1.6
application/x-java-applet;version=1.7
application/x-java-bean;version=1.7
application/x-java-applet;jpi-version=1.7.0_09
application/x-java-bean;jpi-version=1.7.0_09
application/x-java-vm-npruntime
application/x-java-applet;deploy=10.9.2
application/x-java-applet;javafx=2.2.3
Nome: Java Deployment Toolkit 7.0.90.5
Descrizione: NPRuntime Script Plug-in Library for Java(TM) Deploy
Versione: 10.9.2.05
Percorso: C:\Windows\SysWOW64\npDeployJava1.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/java-deployment-toolkit
Disabilita Sempre consentito
NVIDIA 3D (2 files) - Versione: 7.17.13.0697
NVIDIA 3D Vision plugin for Mozilla browsers
Nome: NVIDIA 3D Vision
Descrizione: NVIDIA 3D Vision plugin for Mozilla browsers
Versione: 7.17.13.0697
Percorso: C:\Program Files (x86)\NVIDIA Corporation\3D Vision\npnv3dv.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
image/jps JPEG-based stereo image
.jps
image/pns PNG-based stereo image
.pns
image/mpo Multi-Picture Format image
.mpo
Nome: NVIDIA 3D VISION
Descrizione: NVIDIA 3D Vision Streaming plugin for Mozilla browsers
Versione: 7.17.13.0697
Percorso: C:\Program Files (x86)\NVIDIA Corporation\3D Vision\npnv3dvstreaming.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/mozilla-3dv-streaming-plugin npnv3dvstreaming
.rts
Disabilita Sempre consentito
Pando Web Plugin - Versione: 2.3.3.8
Nome: Pando Web Plugin
Versione: 2.3.3.8
Percorso: C:\Program Files (x86)\Pando Networks\Media Booster\npPandoWebPlugin.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/x-pandoplugin This plug-in detects and launches Pando Media Booster
Disabilita Sempre consentito
VLC Web Plugin - Versione: 2.0.2
VLC media player Web Plugin 2.0.2
Nome: VLC Web Plugin
Descrizione: VLC media player Web Plugin 2.0.2
Versione: 2.0.2
Percorso: C:\Program Files (x86)\VideoLAN\VLC\npvlc.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
audio/mpeg MPEG audio
.mp2 .mp3 .mpga .mpega
audio/x-mpeg MPEG audio
.mp2 .mp3 .mpga .mpega
video/mpeg MPEG video
.mpg .mpeg .mpe
video/x-mpeg MPEG video
.mpg .mpeg .mpe
video/mpeg-system MPEG video
.mpg .mpeg .mpe .vob
video/x-mpeg-system MPEG video
.mpg .mpeg .mpe .vob
audio/mp4 MPEG-4 audio
.aac .mp4 .mpg4
audio/x-m4a MPEG-4 audio
.m4a
video/mp4 MPEG-4 video
.mp4 .mpg4
application/mpeg4-iod MPEG-4 video
.mp4 .mpg4
application/mpeg4-muxcodetable MPEG-4 video
.mp4 .mpg4
video/x-m4v MPEG-4 video
.m4v
video/x-msvideo AVI video
.avi
application/ogg Ogg stream
.ogg
video/ogg Ogg video
.ogv
application/x-ogg Ogg stream
.ogg
application/x-vlc-plugin VLC plug-in
video/x-ms-asf-plugin Windows Media Video
.asf .asx
video/x-ms-asf Windows Media Video
.asf .asx
application/x-mplayer2 Windows Media
video/x-ms-wmv Windows Media
.wmv
video/x-ms-wvx Windows Media Video
.wvx
audio/x-ms-wma Windows Media Audio
.wma
application/x-google-vlc-plugin Google VLC plug-in
audio/wav WAV audio
.wav
audio/x-wav WAV audio
.wav
audio/3gpp 3GPP audio
.3gp .3gpp
video/3gpp 3GPP video
.3gp .3gpp
audio/3gpp2 3GPP2 audio
.3g2 .3gpp2
video/3gpp2 3GPP2 video
.3g2 .3gpp2
video/divx DivX video
.divx
video/flv FLV video
.flv
video/x-flv FLV video
.flv
application/x-matroska Matroska video
.mkv
video/x-matroska Matroska video
.mkv
audio/x-matroska Matroska audio
.mka
application/xspf+xml Playlist xspf
.xspf
audio/x-mpegurl MPEG audio
.m3u
video/webm WebM video
.webm
audio/webm WebM audio
.webm
application/vnd.rn-realmedia Real Media File
.rm
audio/x-realaudio Real Media Audio
.ra
audio/amr AMR audio
.amr
audio/x-flac FLAC audio
.flac
Disabilita Sempre consentito
Adobe Shockwave Player - Versione: 11.6.8r638
Adobe Shockwave for Director Netscape plug-in, version 11.6.8.638
Nome: Shockwave for Director
Descrizione: Adobe Shockwave for Director Netscape plug-in, version 11.6.8.638
Versione: 11.6.8r638
Percorso: C:\Windows\SysWOW64\Adobe\Director\np32dsw_1168638.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/x-director Shockwave Movie
.dir .dxr .dcr
Disabilita Sempre consentito
Silverlight - Versione: 4.1.10329.0
Nome: Silverlight Plug-In
Versione: 4.1.10329.0
Percorso: c:\Program Files (x86)\Microsoft Silverlight\4.1.10329.0\npctrl.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/x-silverlight npctrl
.scr
application/x-silverlight-2
Disabilita Sempre consentito
Windows Presentation Foundation - Versione: 3.5.30729.1 built by: SP
Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
Nome: Windows Presentation Foundation
Descrizione: Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
Versione: 3.5.30729.1 built by: SP
Percorso: c:\Windows\Microsoft.NET\Framework\v3.5\Windows Presentation Foundation\NPWPF.dll
Tipo: NPAPI
Disabilita
Tipi MIME:
Tipo MIME Descrizione Estensioni file
application/x-ms-xbap XAML Browser Application
.xbap
application/xaml+xml XAML Document
.xaml
Disabilita Sempre consentito

[emmedi]

Sull'argomento esiste una discussione ufficiale:
http://www.hwupgrade.it/forum/showthread.php?t=1810605

Ti invito pertanto ad esaminarla ed eventualmente a chiedere lì

Questa viene chiusa.

Ricordo la presenza, in cima alla sezione, dell'elenco delle discussioni ufficiali:
http://www.hwupgrade.it/forum/showthread.php?t=2172687