Question about a dead PC - anyone can assist?
Question about a dead PC - anyone can assist?
After mishandling my motherboard, I swapped it with a second-hand unit and connected everything properly. Still, my PC didn’t respond. I tried a PSU jumper test, but it failed completely. When I flipped the PSU switch on, a red "PLUG_8PIN_PWR" LED lit up unexpectedly—no manual mentioned this feature. Could this indicate my PC isn’t receiving enough power, possibly due to a burnt cable? I replaced the 850W PSU with a functional 750W model, but silence persisted. I also removed most of my RAM modules, suspecting a dead PSU cable. Someone could help me out here. I’m really frustrated and can’t play music or run games anymore. Thanks.
PLUG_8PIN_PWR is positioned at the top of the motherboard, directly beside that light. It's important to use the identical cable connected to the PSU to supply power to the CPU and other components. It seems there are no connections made to it.
The manual advises not to forget to link both the 4-pin and 8-pin EATX12 V power connectors. However, prior to connecting these two, my PC functioned properly. The 4-pin is already connected; should I link the PCI-Express port into the 8-pin connector ("EATX12V_1")?
Are you referring to those two 4-pin and 8-pin EATX12 V power plugs located on the left of the LED?
I linked the CPU cables in the same way they were before putting in the other motherboard.
Here are the connections for the CPU cooler and fan:
They end up at this cable on the back:
However, part of that cable has a loose section I can't see a connector for and which I don't remember disconnecting.
EAX 12v needs 8 pins, but a 4-pin or another 8-pin can be added later if needed. It's only necessary to increase power when required. PCIe connections have different keying due to varying voltages, which means they are compatible only with specific GPUs. EAX 12v all share the same voltage, with one row at +12v and a parallel row at ground. The 8-pin cable for EAX 12v is typically divided into 4+4, while PCIe uses 6+2.
My pc functioned before without these, so I don’t need them. Regarding the Corsair AX PSU, does it really require only Corsair AX cables or is this just a suggestion? Since the PSU is over eight years old, I can’t purchase the same brand cables anymore.
No. You should not link the PCIE 8-pin connector to the motherboard. Instead, attach the CPU ATX12V 8-pin connector (EPS12V) to it. These are distinct connectors. Although they resemble each other, they have different keying mechanisms, preventing incorrect insertion into the wrong socket.