So I have a question regarding not using a CMOS battery with an single board computer. My thinking was that as long as I am using the default BIOS settings that I wouldn't have any problems. I am not using the clock from the BIOS at all, the software that is booting on this setup does not use the time at all. However, I have seen a few instances where this setup won't boot because of a CMOS checksum error, but I can't reproduce this problem myself. I am not too familiar with BIOS at the circuit level so I'm hoping someone here can give me more insight into how this error is coming about.