Crash UE 4.15.2

I have:
CPU_VERSION = Intel(R) Core™ i7-4790 CPU @ 3.60GHz
NVIDIA GeForce GTX 970, Gigabyte GTX 970 G1 Gaming OC
8 GB of RAM.
Windows 7 x64
Motherboard = Z97M-PLUS
BIOS_VERSION = 0327
BIOS_RELEASEDATE = 05/16/2014

I wanted to tell in my opinion important information for developers. About the crashing editor. I used Unreal version 4.15.1. She worked steadily. But then I decided to update the motherboard BIOS to the latest version.
https://www.asus.com/Motherboards/Z97MPLUS/HelpDesk_Download/
BIOS_VERSION = 2903
BIOS_RELEASEDATE = 2016/03/25
Then immediately updated Unreal to 4.15.2.

After updating the editor the Unreal Engine did not work consistently.
I reported about it here:

The editor was able to quit my job without a Windows report a crash.
Sometimes the work ended with a blue screen of death. Appeared error.

The recommended steps did not help:
Disabling Real-Time Thumbnails
Running the engine with -opengl4
Using Forward Rendering

then updated the BIOS to version
BIOS_VERSION = 2202
BIOS_RELEASEDATE = 2014/07/25

After upgrading error UE-42280 disappeared. But the editor was also able to stop working without Windows report a crash. And sometimes appeared blue screen of death.

I updated the BIOS to the version I had at the time of purchase of the computer.
BIOS_VERSION = 0327
BIOS_RELEASEDATE = 05/16/2014

The editor began to work steadily without interruption.

Make your own conclusions.