Not run on Win7 64bit

Windows 7 64bit Professionel, AMD HD 6800, Intel Core i7 processor, everything updated and patched, and the game.
Tried all Kompalititätsmodis of XP until Vista. And I'm not a PC Doofi! The game starts, you play a few minutes,
then the PC turns off abruptly and consumption despite new SSD forever to boot up. The game is on
a second normal hard disk installed in advance on the SSD, changed nothing.
All attempts tried, all Internet tips into consideration, always the same,
PC turns off while playing without notice. Was a bad buy because of customer questions and answers:
Yes. Runs without Pobleme bit on Win 8 64. Too bad, she thought, then goes with Win7. Smooth letdown and shame
otherwise it will indeed only are games with online compulsion.