Hi all, 
I currently have OS X 10.11.2 running on a Dell Inspiron T1700 (i7 4590, 16G DDR3, Quadro K620 (Nvidia Web Driver)) and Clover r3577. It works like a charm. 
I decided to update it to Sierra so I wanted to update Clover first. The last version of Clover didn't work as the computer reboot just after: 
  
  
 
+++++++++++++++++++++++++++++++++++++++++++++++++  
So I decided to "bisect" and find the issue. I finally found I can't even update to Clover r3811 with the same issue.  
I did some tests with OSXAptioFixDrv-64 (reboot after "++++"), OSXAptioFixDrv2-64 (reboot after "++++") and OsxLowMemFixDrv-64 (freeze on "+++++++") 
  
Here is my config.plist file. 
  
Thanks for your help