Hi cykVM,
Thanks for your reply.
I will check your ideas, thanks,
PSOD occurs randomly after standing by few hours, even when nothing is going on there.
BIOS Version: MCH8710H.86A.0047.2013.0606.1508
Intel Chipset DH87MC
Sata Mode AHCI
Core I7 4770
16GB RAM memory
Thanks again,