Transferring parts from PC to new case, now PC won't turn on, please help!

Posted by saltydoesreddit@reddit | buildapc | View on Reddit | 13 comments

A younger relative of mine got a new case + fans for their birthday, and over the last couple days they've been trying to assemble the parts from the old PC to a new case. Then just today, they basically threw up their arms and are uncertain of what to do because after all this, their PC won't turn on period, and I spent the last few hours trying to figure it out, but I don't got much to work with.

Things I tried:

And so far, nothing has made the PC properly boot-up. I'm relatively green with PC assembly, so I implore you to be at least somewhat patient with me in case I say/ask something stupid.