Hi,
Method 1:
I suggest you to run Hardware Troubleshooter and then check for the issue.
a) Open the Hardware and Devices troubleshooter by clicking the Start button and then clicking Control Panel.
b) In the search box, type troubleshooter, and then click Troubleshooting. Under Hardware and Sound, click Configure a device.
c) If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Access the link below to know more about Hardware Troubleshooter:
http://windows.microsoft.com/en-us/windows7/Open-the-Hardware-and-Devices-troubleshooter
Method 2:
If the above step does not help us to diagnose the issue, uninstall the drivers for USB [Universal Serial bus] host controller and restart the computer. Let Windows install the generic drivers and then see if it helps you to fix the issue.
a) Open Device Manager by clicking the Start button, then Device Manager in the search box.
b) If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
c) Look for the device under USB [Universal Serial bus] host controller, right click on it and select Uninstall.
d) Reboot the computer.
e) On reboot, Windows 7 should re-install the drivers automatically.
Try to connect the USB device once the system reboots and check if the issue persists.
Method 3:
I would also suggest you to download the drivers for Windows 7 from the links provided below and check if the issue persists.
Disclaimer:
Using Third Party Software, including hardware drivers can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the use of Third Party Software can be solved. Using Third Party Software is at your own risk.
Thanks and Regards:
Naman R - Microsoft Support Engineer. Visit our Microsoft Answers Feedback Forum and let us know what you think.