I attempted a hardmod following the video posted here: When I put my 3DS back together, before even getting to connect it to my PC I tried to turn on the console to no effect. Pressing the power button didn't do anything, connecting it to a power source does nothing as well, not even LEDs light up. There is no pop sound, no flashes of the screen and the LEDs do not turn on at all. I removed the hardmod and tried to see if maybe it was messing with the console somehow, again to no effect. Any ideas on what to do next? The board looks fairly clean, with no solder splashes that I can observe. There may be a small bridge that is sitting in the area of the CLK, connecting some of the four dots, could this be an issue? I tried taking the board out and putting it back in three times to make sure the ribbon cables are connected properly, and it seems that they are. Should I re-check? I doubt one could be upside down but I am unsure. Lastly, I don't know if I connected the battery upside down when I tried to boot for the first time, I don't think I did but I can't be sure. Should I buy a new board? Any ideas on what to try next before I throw this console out of a 5 story window?