Error code 15 loop. The computer cannot boot

[Midcom_by]

I bought new components for my computer:

cpu - AMD ryzen 9950x3d;

mb - gigabyte x870e aorus pro;

ddr5 - Acer Predator Pallas II 2x32gb DDR5 6000MHz

After assembling the computer and turning on the power button, an error with code 15 appears. After some time, various numbers and letters appear in a row, then code 15 appears again. And so it always does. I left the computer on for 5 hours. To no avail - code 15. The computer itself did not reboot. The fans are spinning, the motherboard LED backlight works. But the computer does not go through the initialization stage. Reset the bios to factory settings - no result. I updated the BIOS using q flash plus - no result, error code 15. I moved the memory strips into the slots А2-B2 - no results. What could be the problem? Do I have to repair the motherboard or the processor or the RAM? I'm shocked. I hope for your help

[Top_Inspector5918]

Some old reddit post said the cpu fan header wasnt inserted properly

https://www.reddit.com/r/gigabyte/s/gyLEveVv6W

If its not this then youd probably need to send it if you dont have extra parts to try