Hi guys; I've something that's really looks like a motherboard issue for me: boot only 1 time out of 10 (optimistic estimation ); and when suceeded it freezes shortly after. This problem appeared after about 3 months of fine use.
I've tested 5 RAM modules individually, 2 different CPUs, 2 different EEPROMs (with 2 different bios), 2 different PSUs (individually and also at the same time in different connectors) and the problem is still here... I've also made several clear CMOS (2 of those for 8~9hours);

What do you think about that?