VGN-z31wnb DRIVER fault Base System Device for

VAIOZ31dk — Wed, 08 Sep 2010 14:43:34 GMT

Hi. Is there someone who can help me with this problem? This case started as a very slow booting laptop. Black screen for up to 30 minutes and slow to work with in general!. I tried reset the OS system to an earlier date, this did not help. I download some updates (driver, bios, etc.) which is available for this model. Then I reinstall W7 pro. and here lately downloaded all three Ricoh Memory Card driver from Originally Installed. It eliminated also errors on SDA Standard Complaint SD Host Controller. But I still have errors on Base System Device (PCI bus 11, device 4, function 4)

Description of properties:

Device type: Other devices. Manufacturer: Unknown. Location: PCI bus 11, device 4, function 4th

Device status:

The drivers for this device are not installed. (Code 28).
There is no driver selected for the device information set or element.
To locate a driver for this device, click Update Driver.
I have tried to update driver from here without luck!
It is possible that I have not done things in the correct order, and perhaps not done it right?
I'm no computer geek which probably can be seen by my description. So if anyone has a helping hand I say thanks. Sincerely

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VGN-z31wnb DRIVER fault Base System Device for