Upgraded from 1.8Ghz 400MHz FSB to 2.4GHz 533MHz FSB on an MSI 6566E mainboard. No problem installing until.. overclocked to 2.8GHz and just before crash I got a windows message indicating there a problem with AGP controller. Wouldn't reboot or even get to post. I replaced the 1.8Ghz CPU and no probs. Checked the northbridge chipset and it looks pretty cooked. What do ya think?, did I cook the CPU or the northbridge????