Remove the USB Device, turn off the computer, disconnect the computer AC Adaptor cord (if connected), and remove the computer battery.Unplug the USB cable and power cord from the USB Device and then plug both cables back in, being sure to connect the USB cord and USB device per the device manufacturer instructions.The USB device appears as an Unknown under the Universal Serial Bus controllers in the Device Manager window.A USB Device Not Recognized pop-up error message is displayed.This issue can manifest in either of the following manner:.This issue is referenced in Microsoft KB Article ID 951766.Because each of these steps represents a possible solution to this issue, check the connectivity of the USB device after completing each step.Specifically, all available operating system Service Packs. Click the Start button, click All Programs, and then click Windows Update to download and install the latest operating system updates.Download and install all available Sony driver, system and application updates.ĭownloads are posted on your model support page.IMPORTANT: Before beginning this procedure, obtain all available hardware and software updates: Follow the steps below to troubleshoot this issue.
