So i bought a new PSU and tried setting it up but realized that the new PSU was missing the PSIE pin for my GPU, so i tried setting up the old PSU again however now my computer wont power on. I have provided pictures of what my computer looks like right now and when it was working. I tried replugging everything and taking out the gpu and trying with out it.
Before: https://imgur.com/a/Ojdj4av
Now: https://imgur.com/a/EUWjdx9
Intel Core i5-4670K NVIDIA GeForce GTX 780 Asus Z87-A G.Skill 8GB
Before: https://imgur.com/a/Ojdj4av
Now: https://imgur.com/a/EUWjdx9
Intel Core i5-4670K NVIDIA GeForce GTX 780 Asus Z87-A G.Skill 8GB