This happened to my friend, too XDTopHat01 wrote:
I had a similar issue when installing my new PSU, I forgot about the CPU power plug because it was hidden, I spent an hour pulling my hair out, reseating all the components, seeing the CPU and CPU wasn't doing anything...starting to shit bricks thinking I was out of a computer.
and then, I lol'd.
He built his first PC all pretty good, but it didn't turn on. I went round, and after about an hour of trying everything I knew, I realised he ain't even plugged the PSU in to everywhere it needed to go...