Ryzen 5 5600X
MSI B550 Tomahawk Max WiFi
Seasonic Focus 750W
2 x 8 GB Viper Steel DDR4 CL 18
Bench testing before full install, and PSU trips instantly. Removed RAM and CPU, and board powers up fine. Reinstalled CPU and PSU trips instantly.
Tried a second motherboard (another brand new Tomahawk), and the same result. Powers up fine with no CPU, but trips the PSU immediately if the CPU is installed.
Tried a different PSU, and still the same.
Any thoughts?