Pc fails to start when using two 8-pin EPS connectors
Pc fails to start when using two 8-pin EPS connectors
Your PC fails to start when both EPS cables are connected, but works with one. During startup you notice a hum from the power supply and a clicking noise suggesting a short. The PSU has a CPU connector and three PCI-e slots, all labeled as EPS. When you connect two EPS cables, you must use a PCI-e labeled port; using a non-CPU labeled port causes the same issues. This suggests either the PSU is defective or there are subtle differences in the connectors despite their appearance. Your system specs include an AMD Ryzen 5 7600X, MSI Pro B650-P motherboard, and other components listed.
Alright, here you go.
Let me know if you need anything changed.
They're focusing on the existing 8-pin connectors on the OP's board. Attempting a PCIe power cable on an EPS isn't recommended.
You're encountering an unusual behavior with your EPS cable in one of the red PCIe labeled plugs. When you connect it and check the voltage, pin 5-7 show 12V while pin 8 reads 0V. This could indicate a mismatch or configuration issue. Comparing the PSU images from Thermaltake suggests a possible difference in setup or labeling.
They have different colors for a reason, and even though they use the same type of connector, they don’t deliver the same voltage on the same line. The site clearly states: "1 x ATX 12V 4+4pin connector (600mm)" — not two versions! I’m not sure what model it is, but my Seasonic Focus GX 750W uses two ATX12V cables.