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Since Installing a new OS - (Windows 8.1) and then installing all the drivers listed on the page for my VPCF23C5E ( ) I have had a Base System device unknown. (there are no drivers installed for this device)
All forums suggest that this is the RICOH memory card controller and to intsall the Sony Firmware extension parser - I have found this required driver at this link which give a small program that supposedly installs the required drivers? -00270203-0082_6599
That has solved half my issue THANK YOU! it took two attempts at installing both but I have succeeded. I am left now with only one issue which I hope the community can help me with? This is related to Intel(R) HM65 Express Chipset Family LPC Interface Controller - 1C49.My device manager is telling me the drivers are not installed lol - Am I right in saying that this is the firmware extension parsar? I think it is asking me for driver ACPI\SNY5001
Solution: I used Universal Extractor to extract the driver files from the .exe file from Sony. Once extracted go to device manager and point the sny5001 item manually to the extracted driver folder. Worked and got rid of the yellow exclamation. 2b1af7f3a8