Case fans sometimes start, sometimes do not on reboot

Mcteazy

Prominent
May 3, 2017
1
0
510
I have a strange problem with some new noctua af14a I've installed on my case.

Sometimes all 5 will start in powerup, sometimes only the rear can does.

If I set fan speeds to max in bios, all will run at full speed.

I have a z87-d3h from gigabyte and a rosewill 550w psu.

Thanks!