The computer is possessed. It will only start when it chooses to.
The computer is possessed. It will only start when it chooses to.
Hey everyone, I just upgraded my PC recently. I swapped out the case, power supply, and fans. The setup includes a Ryzen 5600X, 16GB Corsair Vengeance, RTX3060, 980Pro SSD, HDD, and Gigabyte B560M Aorus Elite. After assembling it, I noticed the power button would sometimes fail to turn on. It required several presses or long holds before it started. I changed the battery, and then a few more attempts were needed. I even tried shorting the motherboard pins manually, but it didn’t help. Eventually, I replaced all the wiring. Since it’s a Corsair HX1200, the cables are quite rigid now, so they’re much looser. The best I got was a few tries with just the CPU and 24-pin connector, but nothing worked. I borrowed a neighbor’s RM850 and connected everything carefully. After flipping the PSU switch, it shut off again without needing the breakers. I thought maybe there was a short circuit, so I removed the motherboard and only connected the CPU and 24-pin. It worked this time. Once I booted up, I cleared the CMOS and it started reliably every time. After flipping the PSU again, it still wouldn’t power on. Now I’ve replaced all the motherboard standoffs and adjusted the middle one for a better fit. Everything is connected properly, and it runs smoothly while I type. I can stress test for hours without any issues. I’m really stuck though—what should I do next?
Tested various clusters inside the room, everything functions well. Older systems required more power but operated correctly.
Notice's a simple fix: swap the CMOS battery. It might not be the root cause, but it's cheap and could help. You said you flipped the breakers? Look at the rear of your PSU for a voltage selection switch. Confirm it matches the correct voltage for your region.
No voltage control present but everything works. I've replaced the CMOS battery already.