Today i redit all my tests with the latest F9M Bios.
And i have isolated the problem. What i did:

Flashed the bios in dos with the autoexec.bat. Loaded optimal settings. Left everything stock. System booted:
Then set Uncore Multi 20x = System boots (default)
Then set Uncore Multi 19x = System fails and resets bios
Then set Uncore Multi 18x = System fails and resets bios
Then set Uncore Multi 17x = System fails and resets bios (i used 24/7 on the F7 bios)
Then set Uncore Multi 16x = System fails and resets bios
Then set Uncore Multi 21x = System boots
Then set Uncore Multi 22x = System boots

So it seems everything below stock is locked. And everything above works fine. But i'm running 195 QPI so with 20x muli my Uncore would be 3.9 GHz and i cant get that stable.

I have this problem with all BIOS version from F8 and higher. F6 and F7 work fine.

Is there anyone that has the same problem ? or am i the only one ?