PC remains inactive unless the CPU power cables are connected
PC remains inactive unless the CPU power cables are connected
I connected the 8pin and 4pin CPU cables to the motherboard but saw no response—no LED lights for the CPU or fans, though the RGB RAM sticks activated. Removing both power cables caused the board to power on and fans to spin again, but the CPU LED still lit up as expected. When I used a different CPU power cable from the same PSU, everything changed. After reinserting the CPU with fresh thermal paste, no pins were bent. I tried another CPU power cable and PSU, but only the 8pin worked. What might be wrong? Could it be a faulty CPU or motherboard issue? I also checked another CPU power cable and PSU, but still no improvement.
If the system sends back a successful POST, it indicates a video signal will appear on your monitor. I’m not sure if that’s exactly what’s occurring, so I wonder if there’s a short somewhere. It might help to restart with just one 4-pin connector rather than the full 8-pin setup. Also, test connecting a different 4-pin into various CPU power ports to see if it changes the outcome.
I also used another 4x4 pin cable. The 1x4 pin cable PSU component in the PSU, CPU part in the motherboard—actually the PC ran smoothly for two days until it stopped working after two to three minutes. It wouldn’t power on again afterward.
I only used the 8-pin version, tried a 4-pin in the correct section of the 8-pin unit, even placed a 4-pin into the left side, but nothing changed. I didn’t change any cables for the CPU power—just wanted it to stay off. No motherboard indicator light or fan noise. Only the RAM RGB lights turned on.
Having a friend who can provide an extra power supply for testing would be helpful. If the issue isn't the power supply itself, it's probably the motherboard.