So I decided to build a Computer. I set up everything outside the case and started the computer and everything posted. So I went ahead and put the Motherboard into the case and hooked everything up to the Motherboard. I want the case fans to be controlled by the cpu so they are adjusted when the machine is not in use. When I turned the computer on to test it once in the case. The CPU's heat sink fan came on but the case fans did not. Now I have to still buy the OS for the machine and I have not configured the BIOS. Is that why the Case fans did not come on? The case fans where hooked up to the Motherboard. If I just connect the Case fans to the PSU will they run as long as the power supply switch is on? I don't really want the fans to be running wide open all day. Like I said I'm no expert and this is my first time attempting a computer build. Any help would be appreciated.