since few week a new problem arrived: During anything the screen becomes black and after a while the PC reboots. The Problem is that there is no minidmp file nor a hint in the event viewer. I really have no start to search for anything. I also cannot say if an update is a culprit. I renewed all neccessary drivers to the newest one. Sometimes it happens during nothing, sometimes after a while, sometimes immediately afterlogging in. I have no Idea. Its an EVGA classified SR-2 board with 32GB Kingston 1033. In the moment it runs with a Nvidea 5690. Windows 8.1 pro. If I would know wich module, dll, service or something else is involved I could go further with thr process explorer for instance and bordering this sh.... But where should I start? I also setup a new windows installation: boom.... same dung. BTW: a hardware defect will be dropped from the group cause I've a dualboot system with Ubuntu as the main OS. There's nothing from this dilema. Any suggestions and thanks in advance. Olly