To test the CPU I disabled the CPU warning temperature & shutdown temp in the bios and attempted to load Windows XP but no matter what I did (normal, safe mode, etc.) the screen kept going back to the initial start-up/password screen. I even tried a second HD with a separate OS with the same result. In neither case would the system boot the OS. Would a malfuncting CPU cause this? The max CPU temp I saw in the bios was: 71C/159F.