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Verify that the lack of sound is not due to
faulty speaker connections. A simple way to test it is to substitute the
speaker connection with headphones and see if you get any sound.
Open the volume control window by clicking your "Start"
button and then "All Programs." Click "Accessories," then
"Entertainment," then "Volume Control." Alternatively, just click on the
speaker icon that's in your System Tray.
Check the volume and mute settings. If any of the mute check
boxes have been checked, uncheck them. If this doesn't work, read on.
Perform a System Restore If Necessary
If the sound has been audible from your computer's speakers
and is suddenly lost, you may need to perform a System Restore. Click on
the " Start" button and then "All Programs."
Click on "Accessories," then "System Tools," then "System Restore."
Complete the System Restore Wizard. If this doesn't work, read on.
Delete and Reinstall the Original Sound Drivers
Deleting and reinstalling your sound driver may resolve the
problem. Your sound driver may have been corrupted or may be missing.
The result of this is that the restore utility menu won't be available.
For Windows XP, follow these steps.
Click on your "Start" button. Click on "Control Panel" and
then "System." Next, click on "Hardware," then "Device Manager, then
"Sound, Video and Game Controllers."
Click on a sound device named in the Device Manager, and then
press the Delete key on the keyboard. Click "OK" in the window that
appears. Remove all the listed sound devices i this way EXCEPT Audio
Codec and Legacy Audio Drivers.
Restart your computer. Reinstall the deleted drivers using
the Driver and Application Recovery CDs that came with your Windows XP
Visit your computer manufacturer's official website. Check
for any updated sound driver software for your sound card. If any,
download them along with the installation instructions.
If its detected in device manager then you have a chance to get it running, just right click on your sound card and uninstall, if prompted "Delete installed device drivers" put tick in the box and proceed.
Now reboot...new drivers will be re-installed when you login to vista.