What is going wrong ?

I bought an i7 7700
Gigabyte b250m-ds3h motherboard
16gb Crucial ddr4 ram
GTX 1070 mini 8gb
240gb Kingston ssd
600w Aerocool integrator psu

Now my problem is once I’ve built all this into my old case (I’ve experience building) I can’t get the thing to power on. I have put in my old 1tb and 2tb HDD as they have my games on. In the past I’ve known the problem to be the front panel connections, but I’ve been fiddling for hours now and just can’t get the thing to power up. The front fan LED’s light up for a split second but there is no fans spinning or anything ...

Any help would be greatly appreciated
Reply to Jordan260
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  1. Best answer
    Try testing the board outside the case.
    Reply to alexoiu
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