Check if your memory timings are not to fast, set it on CAS 3 to be sure. I presume that you have 2 or more sticks of RAM, if so try with only one stick in it, maybe you've a bad RAM stick.
Also be sure you haven't got any resource (i.e. IRQ) conflicts between the different components. One of my comps always displayed a blue screen with error messages on startup, when I changed the network card from PCI slot the problem was solved.
My case has so many fans that it hovers above the ground