Hi, i would like to know if my graphics card is the problem or power supply as my daughter was playing games then she said the screen went black and a spark from pc box appeared.. i shut down everything then unplugged the graphics card and started the pc with no problems. I then reinstalled graphics card but when i switched on pc i saw a white puff of smoke by the 6 pin connector on graphics card, at that point i removed gpu... so my question is could it be gpu or the 6 pin connector from psu...i must say the gpu had a burnt smell as well but i cant say if the smell was inside the box as well...