After firmware update, surface blackscreen with fan full on

[M17x]

Please help...

Its just showing blackscreen with fan on..
All buttons wont work at all.
What should i do?

 

[Mr.NK]

Although you said that alle buttons don't appear to work, maybe holding the power button for long (15 or 30 sec) could initiate a battery reset?
If it's not there are 3 options:
1. Wait until the battery died, load it up again and look what'll happen.
2. Contact MS-Support
3. Go to a store.

 

[gangolfus]

I had this same issue with the firmware update. A super-long power button hold finally got it to quit. After powering back up everything seems fine.