I posted a couple of weeks ago with a problem with my sons new system he was building. No matter what we tried we could not get it to power up. I sent the motherboard in for replacement and the new board worked! Thanks to all who offered advice. It was a great help to us. We were able to narrow the problem down to either the motherboard or the power supply and now his system is up and running. Of course we don't see much of him these days.....