Solution of Faulty CPU

Clean and reseat the CPU: Carefully remove the CPU cooler, clean the CPU and the cooler's base, apply new thermal paste, and reinstall the CPU and cooler.
Check cooling: Ensure the CPU fan is working and that there is proper airflow. Dust buildup can cause overheating.
Check connections: Verify that all cables and components are securely connected to the motherboard.
Clear CMOS: Reset the BIOS settings by removing the motherboard battery for a few minutes. This can resolve conflicts that may prevent the CPU from being recognized.
Update BIOS/UEFI: Check the motherboard manufacturer's website for any available BIOS updates, especially if you have a newer CPU that the current BIOS might not fully support.
Monitor temperatures: After cleaning and reseating, use a tool like HWMonitor or check the BIOS to ensure the CPU temperature remains stable under load.