click start control panel administration tools computer management device manager scroll through all of your devices
if you see a yellow question or exclamation mark ? ! or a red X you will need to update the drivers for this device right click select update driver/reinstall driver
if you can see your usb device but its not working scroll to Ports(Com&Ltd) right click to update driver
if you computer came with a motherboard disk the drivers could be on it
or you might have to download them
rather doing a driver hunt which can take hours
http://download.cnet.com/slimdrivers-free/3000-18513_4-75279940.html
it might take some time being a freeware driver solution
note: it will find all of your outdated drivers
this is a free driver solutions
this 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
also at cnet
http://download.cnet.com/2000-20_4.html
on the home page you should see a search tab just type in what you are looking for
IE: motherboard name sound drivers
you might have to try a few times to get it right
http://download.cnet.com/drivermax/3000-18513_4-10572602.html
Windows 2000/XP/Vista/7/8 free driver program
http://download.cnet.com/drivers-for-free/3000-18512_4-75548155.html
Windows XP/2003/Vista/Server 2008/7/8 free drivers
http://www.downloadcollection.com/device_doctor.htm
Device Doctor is a freeware Windows application that scans your computer hardware and checks to see if there are new driver updates available for your devices. It also locates drivers for Unidentified Devices in the Windows Device Manager. This tool was designed to be very simple and easy to use
http://www.innovative-sol.com/drivermax/
free program, paid update available
hope this helps
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