|If you have not used the laptop for anything yet it might be worth starting again.|
Sony Vaio's can be sensitive to the order in which drivers are installed.
Make sure you get the latest drivers.
You might want to try one of the downloadable restore|recovery disks that are available, some are better than others.
www.recovery-cds.com does one, it will unload and reload all the drivers for you as well.
I work for www.recovery-cds.com, but we will do our best to help you out!