My SSD is now a Intel 520 Series with 240 GB optimized with the Intel SSD Toolbox and I´ve installed the Microsoft Updates last week. After that round about fewer than a half of my shutdowns will result in a restart. Until now I can´t tell that the error comes out from the Board, BIOS, Chipset, CPU, OS or more as one together.
But I have found a new bug. I´ve configured my aux fan as a inlet fan (Silverstone SST-FN181-B). If I have played round about a half hour Battlefield 3 the Intel Desktop Utility have forgotten the aux fan and his inlet job completly and appears with 0 RPM, but he turns arround. At the same time the CPU outlet fan of the Intel RTS2011LC (12 cm and configured as standard CPU fan at the BIOS) blows out with over 1000 RPM and sounds really loud. My front fan is also a inlet fan of the same type like the aux fan, but he runs on normally. The temperature stays in normal range at the maximum load arround of 50° Celsius. After a restart my aux fan is back at the Intel Desktop Utility with normal RPM arround 450 like the front fan and the CPU fan is at 800 RPM normal too.