Hi, Araa,
Thank you for considering Sony Community!
Did you upgrade, install service pack or format the operating system for the past 7 years? Did you change any settings or install an update before this issue started?
Check out this article here from Microsoft for more details about this issue: https://support.microsoft.com/en-us/help/2704233/-windows-is-not-genuine-error-in-windows-7-or-windows-server-2008-r2.
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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