System displays RGB colors but fails to start.
System displays RGB colors but fails to start.
The issue isn't about the system failing to start or send data, just that the power button remains inactive. I attempted to connect the pins directly, but that didn’t resolve it. A paperclip test on the PSU succeeded, and the motherboard was returned for warranty because it wouldn’t power on, though it worked for a month afterward. After returning from vacation, it stopped functioning again. The system has sufficient wattage, so that shouldn’t be an issue. I’ve tried building the board without all extra components, which suggests the problem might lie with the PSU or motherboard, but I’m still unsure.
PSU has sufficient wattage, but its build quality is lacking.
CXm offers a mediocre build quality for PSU. It's adequate for office use without a dedicated GPU, but not ideal for PCs with a dedicated GPU where higher quality is preferable.
That said, there are some good options: Seasonic Focus/Vertex/PRIME, Corsair RMx/RMi/HXi/AXi, Super Flower Leadex Gold/Platinum/Titanium in the 650W range.
My setup uses 3x PCs powered by Seasonic, including 2x PRIME TX-650 and one Focus PX-550. Full specs and images are available in my profile.
If you decide to upgrade to a better PSU, test it and see if performance improves. If it does, the issue was with the original unit.
The paperclip test is unnecessary because it only activates the PSU without applying any load.
It's similar to checking if a car starts properly—just turning it on doesn't reveal problems unless you actually drive it.
The board has been sent to the board for repairs, likely due to its failure again. It's not a top-tier power supply, but it should work for your project.
When the computer fails to power on, the problem may lie with: CPU, MoBo, RAM, GPU, PSU or all of these parts. The weakest part among these five is usually the PSU, as it supplies power to everything and is likely the main cause. To determine which component is faulty, you can either swap it with a known working one (like a new PSU) or try the same component in another compatible system (such as testing your GPU or CPU on a different PC). For example, you could test your Dell monitor with other hardware to check if it might be the issue. Apart from these two solutions, there are no further steps to take when troubleshooting hardware problems that prevent the PC from turning on.