Just accidently blew up my power supply while trying to install it in my dads computer for troubleshooting( btw, what would casue to to spark and smoke?). ANYWAYS, just bought a new 500W power supply, installed it, computer runs great, BUT when trying to just restart the computer, it gets stuck and stops between the restart at the black screen. I have to manually power it down and start it back up. How can I fix this?