First check if nothing is shorting out.
Alos test your PSU without components connected. I assume you got an ATX PSU so this is the way you do it:
1. Remove all connectors from other hardware.
2. Take the 20-pin mobo plug and connect the green (Power On) cable with the black (ground) next to it to turn it on.
My CPU fan spins so fast that it creates a wormhole