So after doing nothing Experten for shutting the ( one year old pc gtx1070, i7 6700k Asus z170 Mini itx) on and opening chrome and browsing for 5 minutes the pc went into the blue screen of death,
Restarting / Save Mode / Taking GPU out / Switching ram sticks around and only using one stick doesn't help.
So my guess was a Ram issue ( don't have extra ram ore a other pc at home ) so I checked the Bios, and the ram sticks showed.
Other stuff that could help fans are spinning as set in the bios
Keyboard and maus are still working
code: SYSTEM_THREAD_EXCEPTION_NOT_HANDELED