Gigabyte GA-MA770-UD3 AMD 770....started sparking (and other weirdness)

[sbomb]

New system, long story short i tested the motherboard without screwing it into the case, just the psu and motherboard, bam, works, test the cpu and it works. I then screw the motherboard into the case to test the graphics card and nothing happens, cpu fan doesnt move, nor the psu. Take the screws out and it works again. I find this odd, so i try some more screws that came with my case, couple do the same thing, get to a third screw and BAM hear a fizzing and this black thing

Located bottom right, underneath the green thing to the right of the yellow sata ports

Then a small spark and little flare, so i immediately switch the psu off to a burning smell. Whats more is that my cpu cooler is fastened to the cpu, i managed to remove the two, neither was warm and there are no signs of melting or damage, external at least. I prey that its fine but who knows, i havent got another motherboard handy

So my question is

What the hell?

Regards

 

[swanseajack]

You did use brass mountings when you screwed it into your case right?

 

[ATIorNvidia]

You most likely shorted something if it worked fine outside of the Case, as someone has said already, did you use the correct screws (standoffs) for your Motherboard?

On a side note, although completely unrelated, my GA-MA770-DS3 (older Model of the UD3) sparked and caught on fire last year . I now have a UD3.