I figured out the problem though. The fan in the old tower had a 3 pin case mount fan. The new one is a 4 pin which connects directly to the psu. So, the motherboard can't even find the system fan.
I heard you could disable the fan's temp reading in the bios but couldn't find anything about it...
I do know this - xenforo dropped the ball by not keeping the vbulletin reputation comments as a feature. The loss of the Reputation comments data when we switched to Xenforo really was the death knell for the site when it came to all the users that left. I know I missed it so much and I got way less interested in the site when that feature was gone and I run the site.
I'm on a page about incorrect corrections, and spent the better part of like two hours trying to get someone to understand that -5^2 = -25, not 25, and then that post had comments get reposted because that group is self sustaining, and that person was in turn trying to explain what I just explained to them. And I'm taking that as a victory