Gigabyte g1.sniper m5 help needed

[Maverix]

Hey all,

I'll get right to it. I just did a build with a Gigabyte g1.sniper m5, i7 4770k Haswell, Corsair H100i, Seagate 660w Platinum PSU, EVGA GTX 780ti OC, 2 SSDs and one regular HDD, and 16 gigs of ram. I'm trying to add a sound card to the build and whenever I insert it into one of the slots, the PC simply won't power on at all. Is there something I'm doing wrong? I had my buddy check it out and he couldn't see anything wrong, but if anyone can venture any guesses, please do.
Thanks for the help!
(I ran the numbers here: Cooler Master Power Supply Calculator - Advance and it says I only need 545w or so.)

 

[KaptCrunch]

what bios version?

also checked the second slot by using single card in that slot

 

[Bond007]

And it works fine without the sound card?

 

[Maverix]

Works absolutely fine without the sound card.
Would the BIOS really be the culprit?

 

[KaptCrunch]

can be the sound card is DOA or bios issue

have tried turn off onboard sound in bios

 

[LionRed]

Have you tried the sound card in another computer? Been years...but I have seen a bad sound card cause a computer not to turn on.

 

[Maverix]

It's not the sound card, as it worked in my previous build.