I have a dell machine which is running on Windows Vista and all of a sudden my usb ports have stopped working. For each of the Usb controllers in device manager there is a yellow exclamation mark beside them listed and if I click on their status I got this error message: Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19). Can anybody tell me how to rectify this problem? Thank you
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