So I gathered more informations.
First of all it can also happen after a while (so windows boots up everything is fine and then it starts behaving like this).
In the device manger everything is fine.
Also I got my keyboard working after pressing all kind of buttons and I think either the backspace or enter key made the whole keyboard work.
About the Asus support section, I checked the stuff for my Laptop, the only thing which is new was the Asus live updater.
Which I going to install now and try out (the old live updater has nothing, so honestly I also don't think the new updater will have anything).
Edit 2: I installed the Live updater, and it had nothing.
Edit 3:
I found this stuff was installed couple of days ago, I am using a german windows, I am not exactly sure what this is.
I guess it was installed via Windows Update, could this cause the issue, can I deinstall it?