Hi rohitkorde,
Welcome to Sony Community!
Were sorry to hear about this. May I know what is the current operating of your laptop. Freezing and fan speed of the laptop may be caused by programs installed that required more power from the device.
1. Power reset the unit
2. Reset Bios
3. Boot to Safe Mode
Take note that each step may resolve the issue. Try to replicate first before proceeding to the next step.
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
If my post answers your question, please mark it as "Accept as Solution"