Hi @Akshay Kumar
Try creating a Win 10 USB recovery disc from any known working Win 10 PC. Go to ''Control Panel > Recovery > Create a recovery disc'' and follow the prompts. You will need a 8GB flashdrive and 40-60 minutes of time.
When you have the recovery disc, start the laptop and get into BIOS. Change the boot order to USB 1st boot option and also enable USB Legacy setting (or CSM setting - not sure as you don't say the model) save the changes and insert the flashdrive and then restart the laptop.
It should boot from the USB.
When it does go to ''Troubleshoot > Advanced > Startup repair'' and follow the prompts.