I had my pc about two weeks ago but had to have a new psu after only a week, the new psu was a newer model and was fully modular whereas the old one was semi modular, after a long time of pulling and dragging my new pc about and having to make a phone call for help, the netsolve guy finally got it working,( although im not convinced the cables are in the right sockets) anyway he left and took all the spare cables from the new psu and the user manual with him....I questioned it just before he got in his car and he said 'just use the cables from the old psu'...now ive looked at how he has set up the new psu and there dosnt seem to be any spare sockets for a second gfx card... or at least the pci-e cables that I have left dont look like they will fit anywhere thats why i think he has either put the cables in the wrong sockets or the ones that I have off my old psu wont fit..I looked on the corsair website to see if its ok to use different cables and came across this
Q: I just changed my PSU from another Brand and used the cables from my old PSU when I installed my new Corsair HX series PSU and now my system will not turn on. What do I need to know?
A: You have to use the Cables that come's with your specific PSU and especially cables from another make of PSU will not be compatible, even cables from a HX520/620 would not be compatible with an HX1000 PSU for example. Please use only the cables that comes with your new PSU other wise you may damage your system components.