Hi LilCalico, This is Ramesh.
AMDRyzenMasterDriver.sys is part of the AMD Ryzen Master utility which is used for overclocking the CPU. The Memory integrity feature in Windows is blocking the vulnerable driver from loading, hence the error message.
You can uninstall the AMD Ryzen Master utility via Settings → Apps and Features.
If you need it later to overclock the CPU, you can download the latest version from the AMD site.
AMD Ryzen™ Master Utility for Overclocking Control: https://www.amd.com/en/products/software/ryzen-master.html#features
However, some users suggest not to use the overclocking tool, especially on laptops. Please see this thread at the AMD site.
AMD Ryzen Master don't work with AMD Ryzen 7 4800H - AMD Community:
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