Hello TijNerurkar, welcome to the Microsoft community, my name is Luiz Cruz, an independent consultant and I would be happy to help you.
What exactly is the model and manufacturer of the Laptop?
Initially even without this information I recommend that you follow the steps below, and if you don't solve or provide any error code send us an image at the time of the problem:
I believe you already have a DVD or Pendrive with Windows 10, I will list other steps that may help you. Even if I have a DVD or Pendrive, I will go through the procedures to create a boot device and start it through your computer to try to recover the system.
Download the tool according to the installed Windows 10 architecture. On here: https://go.microsoft.com/fwlink/?LinkId=691209
Run the downloaded setup and click Create installation media for another computer;
Select the Language, then select the edition and architecture according to the installed Windows 10;
Connect the Pen Drive;
Click Next;
Select the USB Flash Drive option and click Next;
Click Finish;
Boot with the Pen Drive; If you don't know how to access here: https://support.microsoft.com/en-us/windows/cri...
When the installation window appears, click Install Now e siga as intruções para a instalação.
I hope I helped, even more!