Question PC won't start when CPU in the socket ?

Apr 20, 2021
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Hi guys, so I have complete assembly my new PC, here's the issue:

When switched on, the idle light on the mobo light up for less than a second, and nothing happened after that.
But whenever I took the CPU out from the mobo socket, mobo light normally.
Tried pulled of RAM, GPU, and all the cables connect to the mobo, still the same.
Tried PSU with the PSU tester seems all good.

Does this mean my CPU is faulty?

Asus TUF Gaming B550m Wifi (New)
Ryzen 7 3700x (New : previously I accidentally pulled-off from the socket together with AIO from faulty mobo - But no bent pins whatsoever)
Klevv Bolt 8gb x 2 (New)
Asus GT1030 (New)
Corsair RM850x (Second-hand)

Please help ;(
 
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