The latest release of the 9th Gen Intel® Core processors contains several changes. This may require a BIOS update to your Intel® 300 Series Chipset-based motherboard in order to boot. Intel recommends you update the BIOS on your Intel 300 Series Chipset-based systems for compatibility with the latest 9th Gen Intel® Core™ desktop processors.
Refer to the links below or contact your motherboard manufacturer directly for BIOS updates and further information. Please note this list isn't inclusive of all motherboard manufacturers.
If you need further assistance please contact Intel Customer Support.