yes but it was:
1. had original working Video Card in AGP Slot
2. just wanted to make sure the Fan was spinning on new Video Card so just plugged in the molex? and my speakers made a noise like when i turn the system on and off like a mini power surge?
3. i have four video cards
1 i know is dead and replaced
2 the one in the system RZ44G
3 new one with a molex?...never seen this on a Video Card
4 the Video Card on the Machine i'm typing on RZ22G that was upgraded when 1 went down
This is one of the cases that I'd unplug everything from the wall, monitor included, then push the power button on the computer to drain the power from the capacitors. Wait a few minutes, then plug everything back in and test. If it still doesn't work, then I'd test each individual component in another working computer till you've narrowed it down.
Just do bare essentials. Motherboard, PSU, Ram, CPU, Video Card, and monitor. Leave everything else unplugged. If you aren't having any beeps then I don't think too much could be damaged. Highly doubt the CPU is damaged.