Hi developmeant,
Thank you for considering Sony Community!
We're sorry to hear this issue. Kindly check for available drivers and download and install the drivers by running Vaio Care (and Windows Update). This will install any available updated drivers for the unit.
For further assistance, we kindly recommend visiting our Sony Global Website for information on contacting the Sony Support Center in your region at http://www.sony.net/SonyInfo/Support/. Due to proximity, they are in a better position to respond to your questions or concerns.
Regards,
Vincent
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