I have just decided to get a second graphics card in my PC and go SLI. I just got my tax refund, so why not.
Both cards are a GTX 560 Overclock Edition - https://www.pccasegear.com/index.ph...
However, I am having some trouble in getting the power working. My PSU is a fairly old (2009) Antec 750W.
The problem lies in powering number 2 card. I am using 2 of these cables (unfamiliar with the terms of power) http://imgur.com/hw9a5 plugged into the red slots in the PSU. When I press the power button on my case, all the fans twitch about half a turn, then everything just stays dead.
What have I tried?
Tried running just the new graphics card in pcie slot 1 with the original power cables. Boots up fine.
Swapped the cables to the 2 I plugged in. Dead.
Swapped card back to my old one on the new cables. Dead.
Whats happening? My thoughts would say that there is something shorting between the PSU and the cables and it wont run it.