RAM usage maxed out

Forum discussion tagged with RAM usage maxed out.
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    How to enable secure boot mode?

    I tried going into my bios to enable secure boot mode but it said "Warning: CSM is Loaded! Disable the CSM in Setup, repeat operation after Reboot to ensure UEFI Video (GOP) driver is operational". I see no option to disable CSM? my motherboard is a MSI B350 Pc Mate