Hello everyone. So this is my first time building a computer and I've got the cpu/heatsink/fan, graphics card, memory, and power connected. When i press the power button I get one long POST beep followed by 4 short beeps and a CPU fan error message. I have a Cooler master 212 heatsink/fan and I added an extra fan to have a push/pull airflow. Both fans are spinning but when I go into BIOS, it only shows the CPU optional fan spinning at 600-700 RMP and it does not detect the CPU fan. Any ideas?
1, caused by overclocking, which is the work required of the machine too.
2, CPU Fans caused this, in our lives is very common. Such as: the CPU Fan is damaged, aging fan, the fan speed is slow.
3, CPU issues between the Fans. Such as: too much or too little silicone, cpu and fans did not close.
full reason to here: cooling-cpu-fans.com