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My PC (Dell XPS 15z, 8gb RAM, Windows 7, I7) has been taking a long time shutting down recently. I haven't installed anything new. In Control Panel -> Performance Information and tools -> Advanced Tools, I can see two issues under the "Performance Issues" section. One of which is showing that two issues are causing a slow shutdown. The two issues are:

enter image description here

I have uninstalled the Vodafone software ( I use a Vodafone 3G wireless dongle which doesn't need the software installed on the pc in order to work ) which did not help, and also searched google in order to try and find an update with no luck.

Does anyone know how to resolve this issue?

UPDATE -------------

When starting my pc up, and only letting it load as far as the log on window (not actually logging on), and shutting the machine down from there, I get the same problem (about a 4 minute shutdown).

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To uninstall drivers, you'll need to go into Device Manager and uninstall them from there.

Go to Control Panel / System / Device Manager. Then you can either disable such device driver or uninstall it.

Your instincts were not wrong in that in most cases, uninstalling the related software through Programs and features will uninstall the device driver as well. Sadly, that is not always the case. It's times like these that turn people sour when it comes to uninstall routines.

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I have tried that, but can not find the drivers in the device manager? – Ben Feb 2 '12 at 10:25
Try View->Show Hidden Devices in Device Manager. – rakslice Aug 4 '13 at 2:23

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