9:59 AM - Asus M4A78 Plus not supported
The onboard USB controller causes a lockup on boot on the Asus M4A78 Plus. It's an AMD 770 chipset. The onboard NIC is also not supported. Disabling the usb controller completely and rebooting will allow you to get into the system with a ps/2 keyboard.
tags: motherboard ati amd support asus hardware