Press and hold the Power button for 20–30 seconds.
Release it.
Wait 10 seconds.
Press the Power button once to turn it on.
Connect the original Surface power supply.
Ensure the charging LED on the Surface Connect cable is lit.
Leave it charging for at least 30 minutes, then try powering it on again.
Press and hold the Power button and the Volume Up button together for 15–20 seconds.
Ignore the Windows logo if it appears.
Release both buttons.
Wait about 10 seconds.
Press the Power button once.
Turn the Surface off.
Hold Volume Up.
While holding Volume Up, press and release the Power button.
Keep holding Volume Up until the Surface UEFI screen appears.
If UEFI appears: the hardware is likely okay, and Windows may need repair.
If UEFI does not appear: the problem is more likely firmware or hardware related.