|"I have tried rewiring the inside of my pc".|
What wiring did you change?
Did you return it to original configuration before trying a different PSU?
What would make you think the wiring was wrong if the computer had been working?
Sounds like a failed power supply.
Your power supply is a decent one but may not be sufficient for your hardware. Depends on what hardware is installed. Especially the graphics card.
Had you used the same rear USB port in the past?