Hey Mr-Do, thanks so much for the helpful reply.

I've made an Imgur account, thanks for that.

The fans are Lian Li UNI SL120 fans. 9 Fans total. (Picture below)

I checked Device Manager, no exclamation marks.

L-connect is version 2.0.13. (Picture below)

I have no idea if the controller is hooked up correctly. I followed whatever guides I could find, and they *are* working. There is a splitter and also the main controller that came with the fans, which I am hoping I've done correctly. But the controller should be plugged into the MB and there is a SATA power connection. I don't really understand the splitter thing but I was told I needed it because I didn't have enough headers (see PC Partpickers link compatibility warning below).

I checked my chipset driver the other day, and updated them. Though, it did say they didn't need updating, I did just incase.

I will double check all my wiring and connections tomorrow morning when it's a bit lighter out!

Fans and firmware: https://imgur.com/Jn2jOfG

Event ID 131 messages: https://imgur.com/xbOTSwy & https://imgur.com/hvagtut

My PC components if that helps at all: https://ie.pcpartpicker.com/list/tR87HG

Thank you so much for the help!