Problem with the computer not turning on.
Problem with the computer not turning on.
I recently replaced all the components of my PC one by one. Now it doesn’t start at all, not even with fans running from the PSU. The motherboard and other parts were fine before I swapped the old PSU, and I also changed the CPU and GPU. I suspect the issue might be with the PSU, but I’m curious if there are any checks I can do to confirm everything is okay. Thanks.
Check the PSU by connecting the left side of the atx connector and shorting pins 4 and 5 with the clip upward. If it doesn’t activate, it’s faulty. Once it starts, remove the components and test with CPU, RAM, and power. Begin by shorting the power pins using a screwdriver.
I’ve inspected the connections and cords, verified the front panel links (though uncertain if crucial—switched the power switch and LED into a different slot, and it lit up). The PC was operating smoothly after the upgrade. CPU, GPU, and PSU specs changed: from a 1GB 650W model to a Silver Stone 450W PSU. The graphics card went from an X6700XT to a 1650/5600 series. RAM upgraded to two 8GB modules via Corsair Vengeance. Storage added a 2TB Toshiba HDD.
I would begin by inspecting every cable. If your PSU boots but the motherboard shows zero, it’s usually due to a misconnected plug—such as a power or reset switch installed incorrectly. After confirming all connections, try removing the board from the case and reassembling it with just the CPU, RAM, and power supply. To test, briefly touch the power pins with a screwdriver. If that doesn’t help, you likely have a faulty motherboard even though the PSU does start.
The remaining wires should work properly because I didn’t modify them once I swapped the components