Hi, Jonanarose,
Thank you for considering Sont Community!
In addition to luccwb's suggestions, you may try to boot the computer into Safe Mode or test the performance of the keyboard while performing a clean boot to isolate the issue.
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,
Vincent
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