Changed my case and now my pc won't boot?

So I replacement my case yesterday. I know that Mobo is getting power as the LEDs on the front case are on/working but when I press the power button nothing happens. No fans start or anything. Already tried resetting the CMOS but again nothing.

No idea what to do.

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Since it was working before case change,

I would go over all connections carefully. Also check the mounting screws to be sure it's in the right holes. Hope it's nothing more than that. Good luck.

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sounds like the power line... on the wrong pins on the motherboard, usually jumper number 1.

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