cpu fan header

Cpu fan header low voltage that causes my motherboard to not start. I tried to connect the 4 pin cpu fan to the 3 pin system fan and it has high rpm while on the cpu fan header it has low. I think this is what causes my motherboard to not beep. What could be the fix?

Let's get to the issue directly, my Gigabyte Aorus elite motherboard is not booting to bios and just blinking red twice per second and continues indefinitely ( I let it do so for around 5mins for not risking any damage to maybe other components). *PC specs given at the end. #Things to note...