I had some problems with that MB, it turned out it was my memory. My ConsairXMS CL2 that I have OC over 220fsb, did not work. I tried my KingstonHyperX 4000 and my Micron PC3200 and my system is Rock Stable. I orginally thought it was my soundcard, or some PCI IRQ conflict, but check your memory. This MB is very picky about memory.......