Unknown device and device Base system shown in Device Manager

Original title: VAIO VPCF24C5E

Hi all

I've updated Windows 7 Pro for Windows 8 pro on my Sony VAIO (model VPCF24C5E).
Instead of using the kit to upgrade from Sony - which would be put to day/install the necessary drivers that are compatible with Windows 8, I decided to perform a clean installation and leave with the generic drivers.
Everything works fine, except there is a device in the device manager that are displayed as "Unknown device" and another showing as 'System device Base' which has installed a driver, no one can be found.
Also the only FN keys that work are the volume and mute keys. So I guess that one of these devices is something to do with those non-functional.
I wonder if anyone can shed light on what are "Unknown" devices and "Base System" and what they are for and the drivers, I need to get them to function.
It is not a major issue to be honest, as there is nothing that the FN keys do I can't access/adjust through the windows. But I would fix still rather the question anyway!
Here is the link to the Support page for my laptop: http://www.sony.co.uk/support/en/product/vpcf24c5e
Thanks for reading, any info on this will be appreciated.
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Hi James,

This problem occurs when the drivers for the laptop card reader or your computer is not properly installed.

I suggest you to download and install the latest drivers for the card from the website of Sony Reader and check if that helps.

Take a look at http://community.sony.com/t5/Windows-8/Unkonown-quot-Base-System-Device-quot-in-device-manger/td-p/122701

Hope this information is useful. If you have any questions, please let us know.

Tags: Windows

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