Computer suddenly won't boot up

exspeednfs

Distinguished
Oct 3, 2012
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Hi,

I built my gaming pc about a moneth ago. Here are the specs:

i5-3570K
MSI Z68 G45 (G3)
Corsair Vengeance 8GB RAM
Seasonic S12II 520W PSU

Things were going along fine, until i plugged in my network adapter in the USB port of the front panel of my computer case (CoolerMaster K350).

When I press the power button, the fans starts to spin, and the blue light lights up. However I don't get anything on my monitor and my Razer Lycosa keyboard doesn't light up.

Help?