This is common issue of the power supply since the 2 slots have power but the other 4 slots do not have power it means the power supply is not giving enough power bloated or busted capacitors that I know that cause this issue.
Yeah Ive tired with another pc psu I had lying around and its still not working, I dont know if using the barrel instead of the 6pin would make a difference, but if its the capacitors I really need to research to see if it is or take it someone to be repaired
Thanks for your input - happy holidays