Click start control panel administration tools computer management device manager scroll to sound video and game controllers you might see a yellow question / exclamation? ! mark or a red X Right click to reinstall drivers
If your computer came with a motherboard disk the drivers could be on it
or you might download slimdrivers.
Rather doing a driver hunt
http://download.cnet.com/slimdrivers-free/3000-18513_4-75279940.html
Windows XP/Vista/7/8
Note: it will find all of your outdated drivers
This is a free driver solutions
which will automatically search for and find the correct driver You will have to update every driver individually once you update you might be asked whether you want to restart or make a system restore point click no to both of these then continue updating each driver free then restart once all of the drivers have been updated.
It might take some time being free also http://download.cnet.com/2000-20_4.html
Just type in what you want or need be specific you might have to try a few times to get it right.
Tick in either the all software or the windows software box.
IE: motherboard name sound drivers
http://download.cnet.com/drivers-for-free/3000-18512_4-75548155.html
Windows XP/2003/Vista/Server 2008/7/8 free drivers
http://download.cnet.com/drivermax/3000-18513_4-10572602.html
Windows 2000/XP/Vista/7/8 free driver program
hope it helps
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