I recently just bought a new PC as my old HDD died on me. I went from 6GB of RAM to 8GB and a 2.6 to a 3.5GHz processor just adding that for potential references. Anyway, I put in my old 500 Watt power supply and my Nvidia 660 video card, but I don't get any signal to my monitor when I do this. They worked fine on my old PC, but now I'm lost as to why this isn't working all of sudden and I hope I didn't fry my card. I tried the unplug and hold the power button for 30 seconds and it worked with the integrated card but still nothing with the Nvidia. The fan spins when I turn it on, and I'm just not sure what else I can do, any help is appreciated.