New Build, one long beep, three short, no video

I've just put together the following system:

Seasonic x850
Gigabyte z87x D3H
G.Skill Ares Series 8GB (2 x 4GB) DDR3-1866
Intel Core i5-4670K 3.4GHz Quad-Core

I'm also running two 8800GTS until I'm able to upgrade them. I suspect they must be faulty as I'm unable to get any video signal from them. When using the on-board video out, I was able to boot the system and all seemed well. I shut-down, but now I am unable to any video, and have one long and three short beeps on power-up. I have tried my GPU's in either slot, have tried on-board display, have reset CMOS, have switched RAM into other slots. If no RAM is inserted, I get multiple short beeps.

I was running the two 8800GTS on a socket 775 motherboard that packed-up, and I ordered a second-hand replacement, but I sent it back as I thought it was faulty as I couldn't get any video. There's no way a faulty GPU could damage a motherboard is there? There just seems to be a pattern of me trying the GPU and then being left with no video...

Any suggestions will be most appreciated!

 

Check the owner's manual for the board - it should list what the "beep" code means. If you do not have the manual that came with the board, you should be able to go to Gigabyte's website and look it up.

Hope this helps.

 

Your Gigabyte Board uses an AMI EFI BIOS
1 Long, 2 short video failure 1 long 3 short is a memory error:

https://www.google.ca/url?sa=t&sour...m3XS7Vi4gQPfzukAw&sig2=Cy0No_wNpy1U4dFUFyGxnw

 

Any faulty device can take out the motherboard, depending on the actual fault - though it is rare.

Are you observing proper ESD precautions - especially while handling the RAM and CPU? Are you absolutely sure you don't have any extra standoffs under the motherboard? Did you ensure you have both power supply connections to the motherboard? If your graphics card requires additional power connections (as many do) did you connect it?

According to your manual, with two sticks of RAM, they should be installed in slots 1 and 2. And note when looking at your motherboard, starting from the left (closest to the CPU socket), your slots are 4, 2, 3, 1.