try a two button restart
Step 1: Press and hold the power button on your Surface for 30 seconds.
Step 2: After Surface turns off, press and hold volume-up button and the power button on your Surface at the same time for at least 15 seconds, and then release both.
The screen may flash the Surface logo, but continue holding the buttons down for at least 15 seconds.
Step 3: After you release the buttons, wait 10 seconds.
Step 4: Press and release the power button again to turn your Surface back on.
A 30 SECOND SHUTDOWN IS NOT AN ANSWER AND SHOULD NOT BE MARKED AS SUCH!!!
The 30 second shutdown is a FORCE SHUTDOWN. Something that Microsoft DOES NOT WANT you to do during an update or does not recommend you doing at any time. I still regularly have this problem with a $2,000 Surface Pro 4 on Feb 8, 2016.
Last week because of these force shutdowns all communications apps stopped working. I could not use Mail, People, Calendar, and more. After all the work to try and restore those apps, I had to do a reset (reinstall keeping files) on my device and spend hours
reinstalling all the Windows Store Apps (even thought they were not supposed to be removed) and all my desktop programs. I BLAME THIS SQUARLY ON THE FACT THAT I NEED TO USE FORCE SHUTDOWN EVERYTIME I CANNOT WAKE IT UP!
Since the Surface actually wakes up without the screen/display driver not responding, I made some changes this week after I was forced to recover my device. I created two shortcuts on the desktop so I could use a keyboard command to SAFELY shutdown or restart
the Surface. Far more effective than holding a button for 30 seconds.
Commands for each and the keyboard commands I assigned:
CTRL + ALT + R:
%windir%\System32\shutdown.exe /r /t 0
CTRL + ALT + S:
%windir%\System32\shutdown.exe /s /t 0
Create the shortcut and then set your shortcut key by going to Properties > Shortcut.
I use Windows Hello so the device does recognize me as I can tell by the red light and the keyboard that stays lighted. I also noticed I can still interact with Cortana, to bad Cortana does not have a shutdown or restart voice command.
Still patiently waiting for a REAL fix. I have less than 30 days until I will return this Surface to Costco. I expect that will be the case as it does not seem that Microsoft will acknowledge that this is a real problem.