I have a Dell Dimension 8400 with a Xion 600W power supply to power my NVidea video card. Recently, my computer just shut off with out warning. When I tried to turn it back on, I noticed a blinking amber light on the power button. I unplugged everything, reseated all components (except CPU), removed all ram, unplugged HDD+Cd/Dvd ROM's, no luck. Replaced the CMOS Battery, no luck. Checked all USB ports for broken/bent pins, none. I reassembled everything the way it was, no luck. The "inbound current" light is green on my MOBO indicating incoming power. However, the PSU fan will not kick, nor will any of the other fans/components. I am at my wits end here, as I need my PC. Any other ideas would be appreciated. I think I may just need a new PSU.