I just bought a new Chaintech GeForce 6600GT 128MB PCI-Express Video Card and installed it in my Dell Dimension 8400 (P4 3.0 Ghz, 1GB SDRAM) today to replace the ATI Radeon X300SE that came with it. I had been playing Far Cry for a few hours just fine (I hadn't tried overclocking the card yet) when suddenly I heard a click, the monitor when black, and the power-on button on my Dimension started flashing orange. I shut down the computer, but everytime I tried to boot it up, the power-on light would flash orange and the computer would not boot up at all. With the help of Dell tech support, we were able to identify the video card as the source of the problem. Before I send the card back, I thought I ask for some opinions here on whether my card is defective, did it overheat, or is my computer just not capable of handling it? I was debating on whether to go with this card or a Leadtek 6600GT, snd had decided on the Chaintech because it had dual DVI output.