The end of support for Windows 10 means PCs without Windows 11 compatibility will not receive updates, raising security and compatibility concerns. Microsoft requires TPM 2.0 support, Secure Boot compatibility, and specific security features for Windows 11. Intel processors compatible with Windows 11 start from the 8th generation Core series and newer, while AMD compatibility begins with Ryzen 2000 series processors and later. Older Intel Core processors (6th and 7th generation) and first-generation Ryzen processors do not meet the criteria for support.