No system power led cable

I have been having problems starting up my computer. I thought that I didnt have a HDD led cord to plug into the mobo. Auctually it is the system power led cable that I am missing from my case. I have looked all over and think that it dosent have one.

Would this be the reason that the computer will not power up?

Thanks for any help!!!

My next idea why it will not power up is that the power supply is underpowered. I tested that it works with the paper clip method, confirming that the fan and light turns on - but that dosent mean that it will power the components? The newegg calculator said 400 watts but the mobo book says at least 600w. Would this make the computer start up for one second only and then turn off?

I have taken out one stick of memory and one graphics card leaving one each.

I have posted this in a few threads but am not having much luck getting a solution. Thank you very much, I am not sure what I am doing here anymore. I have triple checked the board connections, breadboarded, ect, and am looking for a less obvious solution.