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note: it will find all of your outdated drivers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 they will automatically search for and find the correct driver 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.innovative-sol.com/drivermax/ free program, paid update available
hope it helps
click start control panel administration tools computer management device manager look through all of your devices if you see a yellow question mark?or exclamation mark ! or red xright click to reinstall drivers or
if you can see your usb but its not workingports(com&lpt)right click update driver
sometimes the wires inside the cable will be damaged due to bending or stretching or placing heavy equipment upon the cable
just replace the cable of the hard disk, when you plugged the external disk drive you got that windows could recognize the USB device change the cable everything should work fine again,
check the USB leads that attach to the motherboard usually red-white-green-black make sure they are securely seated and have no dust build up on them dust will cause static and a lot of unforeseen problems
if this fails to fix the problem type in run "regedit" then press ok then you can see registry editor then locate below key. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11 CE-BFC1-08002BE10318} And remove upper filter and lower filter. Then restart computer then check. Also locate the below key and make sure it's value is 3 not 4. HKLM\system\currentcontrolset\services\usbstor make sure start value is 3 not 4
if still no luckyou might have to install a usb 2 or 3 card they are cheap and easy to install you can buy these on Ebay very cheap hope this helps
click start control panel administration tools computer management device manager look through all of your devices if you see a yellow question mark?or exclamation mark ! or red xright click to reinstall drivers or
if you can see your usb but its not workingports(com&lpt)right click update driver
sometimes the wires inside the cable will be damaged due to bending or stretching or placing heavy equipment upon the cable
just replace the cable of the hard disk, when you plugged the external disk drive you got that windows could recognize the USB device change the cable everything should work fine again,
check the USB leads that attach to the motherboard usually red-white-green-black make sure they are securely seated and have no dust build up on them dust will cause static and a lot of unforeseen problems
if this fails to fix the problem you might have to install a usb 2 or 3 card they are cheap and easy to install you can buy these on Ebay very cheap click start control panel administrive tools computer management disk management right click on your drive select properties
click tools you should see click check now click start two boxes automatically fix files and scan for and attempt recovery of bad sectors place then a tick in one box then select check now start or you might tick one box then return after its finished the first repair then return and tick the second box (I have found better results ticking the first box then reurn and tick the second box) you should not do anything while the chkdsk utility is in progress any input may damage this drive hope this helps you691 questions posted
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