Hi, Goldilocks,
Thank you for considering Sony Community!
If the issue started after installing an update or a specific software, you may try to delete or uninstall it to isolate the issue. We also suggest performing a clean boot. In this state, third-party applications will not run on the system. This will help us to eliminate the cause of this issue. Another option you may try is to run a full system scan using an updated antivirus.
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
If my post answers your question, please mark it as "Accept as Solution"