Psu makes clicking noise and fans jolt and it doesn't boot after installing new psu

Mar 11, 2018
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Hi
Old Psu was making a considerable amount of noise so I decided I'd replace it.
After taking it out I plugged in the new one and now my pc won't boot with either the new one or the old one. It just makes a clicking noise and the connected fans jolt back and forth. When I switch the power off and then press the on button to release all the power from the system all the fans soon aswell.
Is there anybody that can help me, I've tried making sure everything is connected and disconnected everything with no luck.
I'm worried at the possibility of having shorted my Mobo.