Hi natali_ay,
Thank you for visiting Sony Community!
You might hit a certain part while cleaning the laptop or it could be something else. You've already performed the basic troubleshooting but still getting the same result. We highly recommend visiting the nearest Sony Authorized Service Center in your place to fully check the part/s inside 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,
Vincent
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