Is it possible my daughter fried my pc?

At the beginning of the week my daughter was playing around in the room and accidentally threw a pillow in between my PC’s power supply (where the fan is) and the wall so it got wedge in between. I did not notice until it was too late and suddenly the computer went dead and would not turn on after that. I assumed she over heated the PS until and I went and bout a replacement 700 watt PSU today and installed it correctly and went to turn it on and nothing. I got a brief flash of light when I pushed the power button (the light was from the system fans) and then nothing else. Is it possible that when my PSU over heated it sent electricity to my motherboard and all my other components? Is it time to start replacing all my parts (I just bought a 350 dollar video card and put it in there :() Any second opinions out there?