getting sound working in virtualbox guest windows 7 - no audio output device is installed
to get the sound working start up windows 7 and download the realtek AC'97 sound driver to your desktop. therefore click on the following link, accept and click ’next’ and download the very first driver “Vista/Win7 (32/64 bits) Driver only (ZIP file)” from any mirror …
and extract it by right-clicking and selection “Extract All…”
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-extract-ac-97-driver.jpg)
select “Extract” on the next screen and wait for the file to be extracted.
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-extract-ac-97-driver-desktop.jpg)
when it is done click on the “Start”-Button and right-click “Computer” and select “Manage”.
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-computer-manage.jpg)
the computer management console opens. select “Device Manger” in the left tree.
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-device-manager.jpg.jpg)
on the right side you should now see a device with a warning sign named “Multimedia Audio Controller”
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-device-manager-multimedia-audio-controller.jpg)
double-click on that and select “Update Driver…” in its properties.
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-multimedia-audio-controller-properties.jpg)
choose “Browse my computer for driver software”
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-multimedia-audio-controller-update-driver-software.jpg)
and click the “Browse…"-button in the new window
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-multimedia-audio-controller-update-driver-software-search.jpg)
select the lately extracted folder and click on “OK”
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-multimedia-audio-controller-update-driver-software-browse.jpg)
make sure the option “Include subfolders” is checked and confirm the step by clicking on the “Next”-button.
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-multimedia-audio-controller-update-driver-software-select.jpg)
confirm the windows security popup by clicking on “Install this driver software anyway”
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-multimedia-audio-controller-update-driver-software-security.jpg)
and wait for the installation to finish.
![](https://cdn.gpunktschmitz.de/blog/182/windows-7-multimedia-audio-controller-update-driver-software-success.jpg)
you now have sound in your vm.
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