Hi Bahadur,
Welcome to Sony Community!
Looks like your having a problem with your laptop. You should have put here the model name of the laptop and a brief description of the issue. Kindly refer to this link for some steps to diagnose the issue. https://us.en.kb.sony.com/app/answers/detail/a_id/30527/p/48903,49902,71454,71497/c/65,66/kw/no%20display
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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