So I was playing a game no overclockinng and I wasn’t straining my pc at all either (was an old game) when the pc shits off. Ok I say let me restart it everything goes well for about 3 seconds until I see a big spark from inside my case in the small grate I have by my gpu, I unplug the computer take out the gpu and realize oh shit I can use it even now because my gpu is my only display output so it struggled to start up flickering my keyboard and mouse 3-4 times before staying steady however no display even after putting my gpu back in. How do I know if it’s my power supply or my graphics card? Please help thank you.