Having a second look at your original question it does seem like like a software issue because it would be quite a coincident for hardware to fail after just an update.
Have you tried getting into the UEFI (BIOS)?
To load the UEFI firmware settings menu:
1. )Shut down your Surface.
2. )Press and hold the volume-up button on your Surface and at the same time, press and release the power button.
3.) When you see the Surface logo, release the volume-up button.
The UEFI menu will display within a few seconds. This will show that your hardware is probably O.K.
Another thing to try is booting Windows from a USB drive as follows:
Note: Before you start, make sure you don’t have any other USB devices connected to your Surface, including USB mouse devices, keyboards, or other storage drives. Surface will try to boot from any other connected USB devices.
1.) Shut down your Surface.
2.) Insert the bootable USB drive into the USB port on your Surface.
For info about how to create a bootable USB drive for your Surface, see Creating and using a USB recovery drive for Surface.
3.) Press and hold the volume-down button on the Surface. While you're doing this, press and release the power button.
4.) The Microsoft or Surface logo appears on your screen. Continue to hold the volume-down button. Release the button once spinning dots appear beneath the logo.
Follow the on-screen instructions to boot from your USB drive.
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