Check this page: Sony eSupport - Windows 10 Upgrade information
"Important: Although Microsoft is already offering the Windows 10 upgrade, it is strongly recommended that you wait to install it until the drivers & installation instructions are available for your VAIO PC model."
I would like to advise you that the driver support for the first generation of Intel® Core™ Processors with Intel® HD Graphics is not available at the moment.
To verify this, please feel free to visit: Supported Operating Systems for Graphics Drivers
I know the first gen is not included in the list but the 2nd is, with that we can know the first gen is not supporting Windows 10* regarding graphics drivers.
If any further information or support is required, feel free to contact us back.
Thanks, Okey so its nothing there to do, I have to wait? or will there never be any driver for windows 10?
It would be to wait for the drivers to be provided by the OEM, since this is a legacy product, the driver support is limited.
If any further information or support is needed, feel free to contact us back.