so i have two hard drives and a win8 installtion disc, one hard drive might have an os on it but im not sure wat it is and if it even works, i can have both plugged in, one plugged in or non at all and the pc wil get to the bios screen and then turn off, i dont even get a chance to put the disc in, it turns off before i can select a boot drive, i dont know wat to do. the fan on my cpu rad is a 3000rpm fan and when i start the pc up and it boots to the bios this fan gets faster and faster until the pc shuts down, ive tried start without the fan plugged in and it says cpu fan error and takes me back to the bios anyway.