Hi JulesJules1965,
Welcome to Sony Community!
We don't recommend an upgrade to any VAIO laptops because they're integrated with each other. We can't guarantee the outcome after the upgrade. In addition, replacing any parts might do more damage to the laptop.
For further assistance regarding your concern, please contact the Sony offices/Sony representative offices nearest to your place of residence in Asia Pacific region http://www.sony-asia.com/countryselector.html?hpid=countryselector:AsiaPacific. Due to proximity, they are in a better position to respond to your questions or concerns.
Regards,
Jen
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