Have you breadboarded the system yet? Gone thru the other boot-no-video thread and checked everything in it? You have to do some troubleshooting now to figure out why your PC isn't booting properly...based on your indications, the links I provided are the best place to start that troubleshooting.
The Corsair Gaming Series PSUs are good quality and I wouldn't initially suspect it of being your issue. Could it be? Yes, but not likely. You're a lot more likely to find another issue by going thru the above troubleshooting steps...