Your CPU must meet the requirements outlined and be on the approved list of CPUs! Yours is not an eighth generation or better CPU so it can't officially run Windows 11.
- Processors/CPUs (Central Processing Units): 1 Ghz or faster with 2 or more cores and appearing on our list of approved CPUs. The processor in your PC will be a main determining factor for running Windows 11. The clock speed (the 1 Ghz or faster requirement) and number of cores (2 or more) are inherent to the processor design as it was manufactured and are not considered upgradable components.