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PC Processors

mvancleave99
Journeyman III

Power supply tripping with CPU installed - new build.

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?

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