Hi, Artpove,
Welcome to Sony Community!
I think, your Sony Vaio is SVS15125CXB and not SYS15125CXB. You mentioned it used to work right? When was that? Were there any changes to the settings or did you install/uninstall an application before this started? We do not have any known issue for this model. Try my suggestions below and see if these will work:
- Update the driver from Device Manager. Right+click the driver (with exclamation), select Update driver. Restart the unit once done.
- Run Vaio Update.
- Run Windows Update.
Hope these help.
Regards,
Vincent
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