so today I think my motherboard died.I recently did a sorta build with an i5-4690K and an Asus Z97-A. it worked for the last week, today I installed a new heatsink, Enermax ETS-T40, and then it wouldn't boot, got 3 beeps and the Dram LED was on. I loosened the heatsink, and managed to get it to boot, but it was only reading one ram stick.so I reseated the ram, and back to not posting.Other info it turns out the RAM i'm using (kinston hyperX 1600mhz CAS11) isn't officially supported.So what do you think? motherboard dead, or I need to be using officially supported ram. I did try with some ancient DDR3 ram and it didn't work either.