Helllo Together, so after Trying to fix the problem by... Clearing CMOS, Unplug Power Cable, Turn Aura Off and ON again in Bios, Updating Bios, Unistalling Aura with CC Cleaner, Reinstaling Aura, Reinstalling Windows 10 i just feelt like i tryed all my possible to fix it and it has to be broken.
Anyway my Aura lightning never worked on my Z270E Mainboard from the begining, the Aura Lights were Off all the time.
So i Called Asus Support and got Someone from Asus Support in Germany (im from Switzerland). After i explained my problem and what i tried in order to fix the problem, he sayd i probably have a malfunction on the Board and Should Retourn it. I asked him if there is a general problem known with Aura lighting and defectous Mainbords? but he just claimed that this ist the first time he hear from that probem. I got kinda pissed an asked how could he know that there is no software fix, if he really never heard that this problem exists. I then added that in US Forums some Coworker from ASUS already admited defect Aura on some Mainboards, collecting them to find the Cause . He Again repeated that there is no General Issue Known but i should RMA it.
So i Called The Shop wehre i bought the Z270E Board and told the Story. They agreed that i can Order a NEW Z270E and RMA the OLD malfuntioning one as soon as i got the New one.
And guess what after i replaced the Old Mainboard with the new one... as soon as i connectet the Power cord and set the Power switch to on (not even Starting The PC) the Aura LED on the mainboard did Lighten up Instantly with the Rainbow effect. The whole Hardware stayed the same every single connection expect the New Mainboard. (So to 99% it was a broken Mainbord... the only problem i have now is that Windows 10 is saying that my OEM Key is not Valid anymore... but im in conntact with Microsoft already and they will help me, They wanted my Phonenummber, Name, E-Mail Adress and A Picture of the purchase receipt of the New.. replaced Mainboard)
So end of the story if your Aura Lightning LEDs never worked and non of the things i mentioned at the begining above can fix your Aura Lightning.
You probably just got a Defect Mainboard like me and and you will have to RMA it.