PSU help?
PSU help?
So beginning of last year I built a new computer. Ran perfect for a few months then one day when I went to power it up it wouldn’t boot. I unplugged the psu and waited for all the lights to go off inside the case. Once they did I plugged it back in and booted it up. Works perfectly after this but nearly every time I shut it down I have to do this process to boot it up. I’m extremely busy and barely home so I haven’t had much time to really work on the problem. I’ve done some research as to what the issue could be. Many say it’s relative to the 5v rail holding a charge and unplugging the psu discharges it. They said it could be due to a failing psu. So my first step in troubleshooting recently was when I rebuilt this system to be rack mounted like my server and put into my server rack. I figured I would buy another psu to test if it was the issue and if so I’d rma the old one. First two boots it booted correctly and then the 3rd boot I had the same issue again. I also have it running on a ups so in theory it should be clean power. I also know it could be something else causing the issue. I’m just looking for ways to narrow it down. Anyone have any tips, suggestions, ideas or things I can try. This has been a very frustrating problem.
It seems this might be a PSU problem. A damaged 24-pin MOBO power cable could be the cause. Alternatively, the issue could lie with the system itself. If you shut down the PSU from the back, keep holding the power button for roughly 20 seconds, then attempt to boot—does it work? Also, check what happens when you press the power button without any action.
The PSU showing this problem is a Seasonic PRIME 1000 Platinum SSR-1000PD. Another unit with similar symptoms is the SEASONIC VERTEX PX1200 80+P FM ATX3. It seems the issue isn’t necessarily from the power supply, possibly linked to the MOBO. My first UPS for more than two years was the Tripp Lite SMART1300LCDT 1300VA. I recently switched to the CyberPower CP1500PFCLCD in February, but it still doesn’t work. No postcode appears—like I never pressed the button. Trying to unplug or flip the power switch until the lights shut off usually resolves it. After that, it boots normally. I own a 5900xt, 3080ti, and my motherboard is a rog Viii hero. I use Sabrent Rocket 4 for storage and have 64 GB Corsair VENGEANCE LPX DDR4 RAM (4x16GB) at 3600MHz CL18. I’ve cleared the CMOS multiple times, but the problem keeps returning. I’ll test the voltages tomorrow.