Solved: Strange issues running y-cruncher or AIDA64 cache mem. benchmark

[Fritz_the_Germ]

Yo guys,
yesterday I started running AIDA64 cache and memory benchmark when all of sudden the screens went black. I couldn't get any response of a keyboard input, the debug code of the mainboard shows up "00", even the rest button was out of order.
I had to shut down the power supply to get the system down.
A new start went through like everyday.
All the other benchmarks I know (3DMark, Cinebench 15, 20, 23, karhu) did not cause these issues but y-cruncher does the same.
What can I do about it?
PPT=200
TDC=140
EDC=180
+200 MHz.

[Fritz_the_Germ]

Yo guys,

it's a pleasure to report that I've solved the issue. 

The problems ware related to the BIOS-setting "PBO Fmax Enhancer". It has to be disabled otherwise the benchmarks won't run through correctly. Even if I set it to "Auto" the problem appears - later though but it appears.