recovery procedure: Disconnect computer Unplug all cables from the HDD, FDD Insert the CD with the drivers of this motherboard Hold CTRL+Home and include POWER
I have ran into this trouble but I managed to regain control after press and hold MEMOK for a few seconds. It restart and request to press F1 to get into setup. Once I am in setup I reflash the bios to it original state under tools. Hope that help but I believe your issue is slightly different which I could not help. May worth a try to restore bios to default setting by clearing the bios with the pin in the motherboard, check your user manual for instruction.
I had to try it 4-5 times before it got past POST. I can tell you what I did, no idea if it will help you... 1) Unplug all USB devices except for your keyboard. 2) Power on machine with power button. Wait for it to freeze 3) Power off by holding power button for 4 seconds. 4) Power on by holding MEMOK for ~10 seconds(keep it pressed after power on starts) 5) Repeat 2-4 until past POST 6) Boot into freedos from ASUS CD and flash stock, unmodified BIOS with the same version.