I think the ACPI files weren't the Problem. It seems to be the config.plist and the removed drivers from drivers64UEFI.
I now used 1:1 the config.plist which is attached in the folder from post #1. And I also used the boot flags dart=0 and nv_disable=1. (why did i have to use these boot flags as machanical didn't used them in his guide in post #1?)
So now I were able to boot in my installed El Capitan and so far it seems like most of the functions are working. I still have problems with the sound, as the sound won't work with the guide in post #1 and i am still not able to go in sleep mode when i fold down the laptop. How do i solve these things?
Another question is referred to the gt940m. Do i have to disable it or can I leave it so? I ask that, because i don't want to lose battery while it is working in the background of the laptop, although i don't use it in El Capitan.
I also leave out CsmVideoDxe-64 , DataHubDxe-64 and PartitionDxe-64 in drivers64UEFI.
Are those ones really necessary for me or can i ignore them?
Note: At the moment i still haven't create the SSDT for power management. I will do that after solving my current problems.
Could you check my current clover folder and tell me if something is missing?
Thank you for your help RehabMan!