Sorry, I forgot some important: IDE Hard Drives! I had 2 change my Master HD because of a shipment France-USA (Fedex sucks sumtimes, yup!). I`ve tried 2 switch cables 2 make sure it was not the problem (drives cables and Hard Drives cables). I`ve tried to switch place of my cable connections on the mothersboard. Different HD configurations (Master, Slave, Cable etc). CD-R unplugged, DVD unplugged, only one RAM (512) plugged. My power supply is the french basic one. I only use an adaptator, not a transfo.. maybe that`s the problem.