I sent the email to my contact at AMD to tell him the cpu died (for unknow reason) and I also contacted Chew* to know if he knows this issue yet.
Chew* replied to me yet and said it's a know issue when using PS Check, it happened to him as well, when maxing other cores than 1/2 the chip never booted again, that's why PS Check had to remain under NDA.
First we installed 990fx driver, then TurboV evo, updated to cpu-z 1.58.7 and installed PS Check, reboot testing with only core 7 enabled in bios, maxing out withTurboV evo. Reboot, disable core #7, enable core #2, boot at 2.0V and 7.7 GHz into windows, use TurboV evo to raise from 31x250 to 31x263, valid 8.149 GHz, while others were playing like children with LN2, wanted to quickly try ps check as showed on hwbot thread, no luck with higher freq. reboot, disable core 2, enable core 3, lower voltage to 1.9 to be safe, press F10 + Enter, reboot and error 56 at post, reset, error 56. CLR_CMOS, still error 56. remove LN2, dry everything, try on air, board is working with Phenom II x 6, check again with FX 8150, error 56 again.
Btw, we used Special BIOS 9913 made by Shamino/Andre Yang.
I will try to have more info from AMD and Chew*.
Chew* asked me to contact AMD as well to tell them the problem we had, and it's what I did.
Let's see how it goes.