Hello there, I've alredy cruised severl forums and consulted many colleagues about this particular case, you may want to see the (unsuccessful) proggression I've had so far here and here, but first of all, here's the skinny: I bought and assembled a new computer for a friend of mine, tested it, everything seemed fine, until they proved not to be. I've tested all components (proccessor, GPU, RAM, HDD) with all the tests I know for painstakingly long periods, with no errors whatsoever, but neverthelese computer keeps rebooting with BSODs at *random* intervals (independent of use). The only clue I've found so far, is that it *might* be an incompatibility issue between the ram modules and the motherboard. Here I attach the SF tool results and an speccy image of the system. Thanks to you all.