Cpu OC problems after loop rebuild

[Thronicus]

Hello! Im having some really irritating problems with my cpu overclock after I rebuilt my system.

Specs: Asus maximus xi formula mobo with i9 9900k processor.

The problem is that after I booted my pc the old overclock did not want to activate, as in when I booted into windows (after going through bios and checking everything) my cpu was only pushing stock numbers, as in 3.6 ghz.

Thought that something might have been messed up, so I rebooted, resetted to original settings and then to make sure I got It right I followed derbauhers video on YouTube to make an easy 5.0 overclock.

But nay, still only showing 3.6... It's a custom water loop, so not because of heat, during cinabench r20 I max at 55c.

Also get an cpu fan error, even tho the fans plugged in through that connector all spin and has working pmw settings..

Thanks!