Hi,
Did you correctly force shutdown your device?
This is what you should do to force shut down a Surface.
Step 1: Press and hold the power button on your Surface for 30 seconds and then release it.Step 2: Press and hold the volume-up button and the power button at the sametime for at least 15 seconds and then release both.The screen may flash the Surface logo, but continue holding the buttonsdown for at least 15 seconds.Step 3: After you release the buttons, wait 10 seconds.Step 4: Press and release the power button to turn your Surface back on. Youshould see the Surface logo. Credit to Barb Bowman in this thread
Cheers!