First, please disconnect all USB devices and then perform the following steps:
Click "Start" button, type "devmgmt.msc" (without quotation marks) in the "Search" bar and press "Enter". Click "Continue" if necessary.
In Device Manager, double click to expand "Universal Serial Bus controllers", right click on the Host Controller, click "Uninstall" and click "OK".
Repeat the step 2 to uninstall all items under "Universal Serial Bus controllers".
Then, restart your computer and Windows 7 will reinstall all USB controllers automatically.
hope this helps
Fix Driver Solution: In Windows Start/Control Panel/ Device Manager/ and search through the list for the element of distress. If it's Audio, it is in the Sound/Video/Game Controllers whereby left clicking on that section will open up a window indicating your electronic devices. A video Camera/Sound Source may show up and if you Right Click on that line you get a message Update Software? You will get another option the Search On-Line (you must have internet access for this feature) and say yes, and allow a search to ensue. If you have the Best Driver installed a message stating so will appear; if not you will get an updated driver and it will be installed for you automatically. The other method is to go to the Manufactures Web Site and Support area. Input the necessary data (Model, etc.) and look for Drivers. Update ALL new drivers at the same time and install them accordingly. Then an alternative it to use a Wireless Keyboard/Mouse set using the USB ports. or
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