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"Resolution
To resolve this problem, do the following.
To open Device Manager, click Start, click Search programs and files, and then type Device Manager. A list of available matching items appears above the search box; click Device Manager. Device Manager opens with your computer name at the top and a list of devices that are installed on your computer beneath your computer name.
Locate the malfunctioning device in the list of devices, right-click the device, and then click Uninstall. When a warning message appears that you are uninstalling a device from your system, click OK. Device manager uninstalls the device.
Right-click your computer name in Device Manager and click Scan for hardware changes. Device manager scans your system and automatically reinstalls your device.
Right-click the device and click Properties. On the General tab of the device Properties dialog box, in Device status, you should see the message This device is working properly.
If the steps above do not resolve the problems with the device, and if the device is an external drive, such as a USB flash drive or external hard drive, use the taskbar icon to safely eject the device, then unplug the device from the computer. For devices that use AC power, unplug the device from the electrical outlet or power strip, wait 30 seconds, and then plug it back in. Turn on the device power switch, and then plug it in to your computer. If the device includes a drivers disk, ensure that you have it handy to install the device drivers; otherwise, Windows should automatically locate the correct drivers and install them.
If you do not have a driver disk and Windows cannot automatically detect the drivers, it means that your hardware manufacturer has not uploaded the drivers for your device to Windows Update. If this is the case, you must go to your device manufacturer web site to download or request the most recent drivers for your device. "
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