Okay, so we will need to know information about your laptop...
-Make & Model (for example, Dell Inspiron 1525) -Operating System (for example, Windows 7) -If you can see the black boot menu when you first start up the computer. -If you have internet access on that laptop or any other PC to which you can download files and tools.
The error code found is "UNMOUNTABLE_BOOT_VOLUME" - which I was able to slow-motion your video and pause right when the blue screen popped on. It was only there for a split second, but I caught that error code.
We will do some research and find out how we can best solve the laptop's issue.
Ensure your laptop is shut down... Start it up and Press F2 when the Dell logo appears. Press every few seconds until the message Entering Setup appears.
You will then see an unfamiliar screen. However, don't worry... Press the F9 key (confirm at the bottom of the screen that this "Resets". If it does, then continue). Confirm other prompts and then press ESC to then hit Save and Exit. It will restart the computer.
If the computer does not continue booting into Windows (without going into Safe Mode) let us know.