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how can I get usb working

usb 2 devices
do not work on usb 3 port

windows 7 desktop
custom made computer
2 Solutions
JohnBusiness Consultant (Owner)Commented:
Windows has drivers built-in for USB.  

Open cmd.exe with Run as Administrator and run SFC /SCANNOW. Allow to complete, shut down, start up and then, now, do the USB ports work.

If being a custom computer you would need to contact the board maker support and as for a hardware test suite.
Andrew LeniartSenior EditorCommented:
Windows drivers may not work sometimes. Most (all?) mainboards come with a driver install CD. Have you installed the drivers on the board? If you don't have a driver installation CD, go to the boards' manufacturer's website, download the driver kit (or just the ones for USB if everything else is ok) and install them.

If this was built for you and you're not sure what to do, open the case and take a note of the Mainboards make and model number and post here.

Strange.  USB 2 devices SHOULD work on a USB 3 port.  There should be backward compatibility.  That is part of the standard.

If this is a custom made computer you download and install the drivers from the motherboard manufacturer.  Chipset drivers first, and then all of the others.  In many cases installing the chipset drivers gives you the USB drivers for the motherboard.

It is possible that you've got a system that only accepts USB 3 but that is unusual.  No backwards compatibility is unusual (but I have seen a system that was USB 2 but would not take a USB 1 stick).

Anyway post motherboard make and model number as requested above.  Speccy  might be able to do this for you without opening up the case.

Oh, and check for BIOS updates.
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Rob KnightConsultantCommented:

You probably have have a 3rd party USB chip supplier and therefore need their.drivers to work.properly.

please consult.either the motherboard manufacturer or system vendors website for the latest drivers.
Windows 7 does not have USB 3 drivers, so i ask  : are there any errors in device manager ?
the usb 3 ports are usually installed with external soft like intel's usb3 Creators utility :
RaminTechnical AdvisorCommented:
Make sure legacy USB is Enabled in BIOS.

If uninstalling  and reinstalling USB 3.0 drivers from Motherboard's manufacturer website didn't fix the issue then follow below steps:

Disconnect any extra USB device from PC
Open Device Manager.
Double-click Universal Serial Bus Controllers to expand the list.
Right-click the first USB Root Hub in the list, then select Uninstall. Click OK to confirm.
Continue uninstalling all USB Root Hubs listed.
Close Device Manager and restart the computer.

                                                      * * * * *

if none of the above worked then you need Windows 7 Repair Install or even install a fresh copy of Windows.
Hello ThereSystem AdministratorCommented:
Open Device Manager -> Locate USB hub or so -> Properties -> Details -> HW's ID -> copy the first one to clipboard
Then open any browser -> -> insert your driver ID, download the corresponding driver and install it. Reboot.
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