So I was trying to test an old gts 450 on my pc so my friend could use it. I turned the pc off, plugged everything off except the power cable. Of course the power supply was turned off but as I was reaching for the lock that locks the gpu in place, I felt a slight ground. At first I panicked because I thought I may broke my pc but instead continued to swap my current video card to the gts 450. "No display" showed on the monitor, so then I swapped the gts 450 back to my current gpu then the same message appeared. I tried swapping out the ram from the ram slots, re-seating everything, tried using other pcie lanes and still got no display. Oddly though when I plug my keyboard, the led's light up but my mouse doesn't and I'm sure the motherboard is getting power because the fans are working fine. Did I break something or did I just miss something?