The motherboard is receiving power yet fails to turn on.
The motherboard is receiving power yet fails to turn on.
Sure thing! Here’s a rephrased version of your message:
Hey everyone, in a nutshell, I ran the pre-build tests on the CPU, GPU, and RAM—everything was functioning properly. I installed everything into the case, and now nothing seems to happen. As expected, the mainboard powers up when the power supply is activated. I’m feeling confused because I think I did everything right and tried all the usual fixes. I checked: all connectors are in place (ATX 24-pin, CPU 8+4-pin, PCIe 6-pin, etc.), and the PSU is connected to a working outlet. After reseating the CPU, GPU, and RAM, I reset the CMOS, double-checked the panel connectors, and even tried shorting the board during testing—though that also didn’t work. I’m not sure if this motherboard has Debug LEDs or if they’re just for show. They’re faintly visible under a cover and labeled PCH LED 1 through 4 in different colors. I attempted to bypass them while troubleshooting, but it didn’t help. I’m really stuck and don’t know why it worked during testing but failed afterward. Thanks for your patience. Update: I took the machine to a repair shop now, hoping they can help. I should have a solution by tomorrow. Update 2: The motherboard itself appears to be faulty. I’ve replaced it and made some progress with fans and RGB lighting, but still no POST or monitor signal. It feels strange—like something’s off. Specs: Motherboard – ASUS PRIME X570-P, CPU – AMD Ryzen 9 5900X, GPU – MSI GeForce GTX 1050Ti, RAM – VENGEANCE RGB PRO SL (2x8GB), Cooler – iCUE H100i ELITE CAPELLIX, PSU – CX750F RGB, Case – Corsair 500D SE Mid Tower. Edited January 4, 2023 by Araiken.
Confirm the PSU rocker switch is fully engaged. It's easy to overlook this step. Ensure all wires are intact and not twisted or tangled from cable stress. Inspect screws that may have slipped between the motherboard and chassis, and recheck any connectors. Even with block connectors, extra ones can be present—verify their correct placement. Also review pin configurations on those connectors. Your system is a 5900X; has the BIOS been updated? Many models aren't 5000-ready by default, so an update might be necessary. Some boards support USB flashing, while others need specific CPU versions for updates. Finally, confirm the CPU is properly aligned and securely seated in its socket.
I accessed the BIOS to verify registration, and the system confirmed it worked.
In this scenario, with all components in place, do you expect a solid PSU test even without any connectors attached? Also, I understand this might seem odd, but certain cases include directional power for the inverter switch, meaning the header could appear correct while being faulty.