Blender temporary OpenGL Error

[Chaftalie]

A few days ago I installed Blender 2.8.1 and it worked perfectly for ~5 minutes then it crashed with (The crash is always the same):

 

 

Since then when I start Blender that Error pops up.

After reinstalling the driver it worked again, until it crashed again.

Reinstalling the driver did not work that time. (reinstall, restart, ..)

Today blender worked again out of nowhere, and it worked for about 8 hours (rendering an image is not a Problem) (After blender started to work again I installed 2 extra GTX 970 for better rendering performance)

I have no idea what to do next, atm I am using a fresh win 10 install and it worked the last 2 hours, but thats not optimal.

 

My Specs.:

8700K @4,8Ghz

32GB 3600Mhz

SSD 970 2x1TB

1070 Ti Zotac mini

2 x 970 Zotac mini

600 Watt bequiet (I will upgrade that soon , atm my System draws at full blender rendering load ~580 - 596 Watts, never saw anything above 596W )

newest Win 10

 

Temperatures are all below 70°C

My System is stable in Prime and in 3D Mark