If none of the tools in Control Panel or the Volume Mixer seem to help, it??™s
time to start looking at your sound device. Open Control Panel ??? Device
Manager (or launch devmgmt.msc), and expand the Sound, video and game
controllers branch. If your device isn??™t listed, then Windows hasn??™t detected
it, and hasn??™t loaded a driver for it. If it??™s listed, but its icon is covered with a
red X, then it??™s just disabled; right-click the device and select Enable.
If the device icon is covered with a yellow exclamation point, then there??™s
something wrong with the driver or the device. The first course of action is
to right-click the device and select Uninstall. Check the Delete the driver
software for this device option, and click OK. When the uninstallation is
complete, restart Windows, and Vista should redetect the device and install
new drivers by itself. If this doesn??™t work, visit the sound card manufacturer??™s
web site and download the latest drivers for your card.
Now, if none of your sound devices work, including ones that are supposed to
be Vista-compatible, you may have stumbled upon a nasty problem that sometimes
affects Vista when it??™s been installed over an earlier version of Windows.
If this is the case with your PC, you should spend some time and remove any
remnants of old audio drivers. But be prepared for the possibility that Vista will
never produce sound reliably until it has been reinstalled from scratch.
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