I have a eMachine with a ASRock K7S41GX MB and an AMD Athlon CPU. When the system is booted the CUP fan will power up and so will the hard drive, however, there are no other sighs of life. There is no beep code and nothing is displayed on the monitor. The monitor has been verified that it is working. I have stripped the board down to only the CPU and receive the same result. I do have a PC BIOS diagnostic card that fits in the PCI slot, in fact I have three different ones and they all give the same code, C0. In the manuals there is no C0 trouble code listing for a AMI BIOS. I have swapped out the CPU for a different AMD Athlon with the same result. My question is does anyone have any idea what the C0 error code is before I declare the MB a total loss?