Question b450-f gaming doesnt power on

Jun 25, 2020
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I have b450-f and when i short the power pins the motherboard doesnt even power with or without cpu/memory. If you have any idea please let me know!
 
We just wanna help and understand your situation, it´s hard from the outside to help, if the answers from you are not that precise.

Which other hardware did you use to verify that the motherboard, CPU, RAM and PSU are working with other components?

Usually if it doesn´t show any sign of life, the PSU or motherboard would be faulty. But because you tested the components with others and these worked before, can you check with the other hardware again?