I have been using ver.375.39 for a while, and experienced several crashes. My workstation has Nvidia Quadro M2000 and two HP Z27n displays connected using two Display ports.
This happens when waking up the system from idle, i.e., from black screen. When this happens, there’s no response on the black screen (normally, the screen will show the OS interface), and then the system will reboot. vmcore crash reports will be saved at /var/crash. I had Red Hat people look at the problem, and they confirmed it is related to Nvidia proprietary driver.
http://www.nvidia.com/Download/driverResults.aspx/114708/en-us
Nvidia says the version 375.39 fixes the bug related to multiple DisplayPort monitors resuming from suspend. Well,it doesn’t.