Turning off the CSM will cause the system to become unresponsive.
Turning off the CSM will cause the system to become unresponsive.
I tried to turn on AMD's SAM but it needs CSM turned off. I changed CSM settings in BIOS and set 4G decoding plus other options, but forgot the exact name. I managed to log into Windows, but it became unresponsive. I could only open File Explorer, the Start Menu, and the System Tray. Other functions like opening files or apps didn’t work. My startup app didn’t launch, and I couldn’t restart the PC from Windows either; even CTRL + ALT + DEL didn’t help. It turned out CSM was the issue. Fixing CSM should make Windows responsive again, but SAM remains disabled.
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If you installed your operating system while CSM was active, you'll need to reinstall it to disable CSM.
So i should have turned off CSM first and then installed my OS? Is there a way around this? Because I disabled CSM successfully, but I don’t remember the exact BIOS settings—it broke after I tried to run Furmark with an overclocked GPU using AMD Adrenaline after restarting my PC. My Furmark score before SAM disabled was 7660, and after it was around 7400.
After consulting a friend, the issue seemed to be related to the driver. With both iGPU and dGPU available, my PC became confused. I can turn off CSM when the dGPU is disconnected by unplugging the power cable and switching to iGPU. I'm planning to remove the display driver and disable CSM again after that. Also, I also turned off my iGPU.