Hi everybody. I am not a programmer and English is not my native language. So I'm very sorry if it bothers you. I want to use an EGPU but that requires editing the DSDT file. I have added the necessary lines of code. The other is to remove the Warning and Remark. It was really hard for me. So I look forward to getting help from a kind person. I use HP 8570w and this is my DSDT.dsl file. https://drive.google.com/open?id=1Th5DhYm7L08Ufj8AeQHFrLPSzrTaxFC6 Thank you and have a nice day.