Hey there!
My name is Ravi, an independent advisor and expert user. I am happy to help you. :)
I understand how concerning it can be when a laptop doesn't respond to anything. Try using the system repair option.
1). Turn off your PC
2). Start the PC, when Windows starts loading, press and hold the Power Button for 5 - 10 seconds to perform a Hard Shut Down
3). Do it twice.
4). When you start Windows the third time, it will boot into the Recovery Environment. You can access Startup Repair, Command Prompt, and other options.
5). Go to Troubleshoot - Advanced Option - Startup Repair and check if Windows can repair itself.
If it works, you can update the BIOS later by downloading it from the Samsung website and creating a bootable USB drive.
Feel free to get in touch again if you have any additional questions.
Cheers,
Ravi