I updated my ATI drivers for my HD4850 crossfire setup today, and upon reboot it crashed and gave me an error screen saying "A hypertransport sync flood error occurred on last boot." I went into safe mode and uninstalled the drivers, then reinstalled the previous version, but I still got the same error. So I went and set all my CMOS settings to defaults, but that didn't help any. So now if I have my video drivers installed at all it crashes on boot. All works fine without them. Does anyone know what could be causing this?