My Mainbord "ROG Strix X570-E Gaming" doesn't accept to activate "Above 4G decoding". If I try turn it on, the MB will not boot anymore and stay dark. Only a CMOS reset helps to get back online.
As this is the official way to turn SAM on, I am stuck. What ist the root cause?
My GPU is a Asus TUF 6900xt. So I am on a complete ASUS setup.
The CPU is a AMD 5800x.
Can it be disabled with a running Windows 10 Installation or do I have to reinstall the OS again?
I turned off the CSM without any problems for Windows 10. But it was not solving my problem directly. I was forced to reset my BIOS to default as my saved profile was somehow still was not working. I restored all my settings manually and now it works. 4G encoding is now enabled.
I don't have more performance yet, I have to check how to veriy if this is really active or not.
I hope this thread will be helpful for others.
Thank you @xeizo!