Was building a new system for my son. Hooked the Enermax up to the ECS board and power supply would not start. Put in an Aopen 300W and away it went. Retried the Enermax and nothing. Put it in my machine Asus A7V and it runs great. Weird, any ideas? My son would like to have his power supply back as he is running an XP 1700+.