Hi guys, today my final PC component (PSU) arrived and I installed it with my motherboard, but when I turn on the PC after connecting all the cables, nothing happens. No fans spin (case/cpu), the PSU doesn't start up (no fans spin too), no lights on the motherboard, absolutely nothing. At first I thought that PSU is faulty / not working. So what I did is I did a paper clip test which started up PSU, so that's not the issue. Then I thought maybe front panel connectors are not working so what I did is I removed front case cables and tried to jump start the motherboard with the screwdriver following my motherboard manual. Still nothing. It's like the motherboard doesn't receive power at all from PSU. Could it be faulty motherboard? The build went relatively smooth no major issues so I'm not sure. I also tried switching RAM sticks up, trying with only 1 stick, in different positions, etc. Nothing worked. Nothing starts up.
Here are the components:
Motherboard: MSI B450 Tomahawk MAX
CPU: AMD Ryzen 5 3400G (using stock cooler)
RAM: G.SKILL 32GB Aegis DDR4 3200MHz CL16 KIT (2 x 16GB)
SSD: SAMSUNG 512GB 970 PRO M.2 PCIe M.2
PSU: CORSAIR TX650M
CASE: CoolerMaster MasterBox MB511
Video of the issue can be checked here - https://streamable.com/432t3
Any help would be appreciated.