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.

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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