PC begins operation immediately upon switching on power.
PC begins operation immediately upon switching on power.
Hi. I’m facing an issue with my PC that has been ongoing for some time. It seems it wasn’t right after installation two years ago, but soon after. The computer only powers on when I supply power directly. If I turn it on, wait a few seconds, then shut it down and try again, nothing happens. I’ve tried many solutions: updating BIOS, enabling FastBoot, removing all drives except the boot drive, using a different PSU, disabling ERP in BIOS, ensuring there’s no overheating, resetting CMOS, and even rebuilding the whole system in a new case with a new PSU. All attempts have failed. I’m unsure what else to try except replacing the motherboard, RAM, or CPU, which isn’t straightforward without purchasing new parts (maybe borrowing from work).
Details about the system:
- Windows 11 Pro
- Asus X670e Plus Wifi
- AMD 7700x
- XFX 7900 XTX
- G.Skill Trident Z5 Neo Expo RGB DIMM Kit 32GB, DDR5-6000, CL 32-38-38-96
- 2TB Samsung 980 Pro
- LianLi Edge EG1300W Platinum, old beQuiet! Pure Power 12M 1000W
Anyone have suggestions or possible causes?
You have experimented with a different PSU. I would check the power supply voltages during the issue and continue testing based on those findings. There could be a component drawing power from the PSU. The PS_On pin must remain low to activate the supply. What voltage is detected when attempting to start the PC?
I shared the problem on another forum and took apart the entire PC, taking out all non-essential components from the motherboard. The issue appears to exist with both the old and new PSU. It looks like the motherboard is the source of the problem.
At this stage I generally concur. Are your motherboard's BIOS settings set to their standard defaults? No adjustments or overclocking involved. Additionally, when you detach the GPU and rely solely on the built-in one, does the system's operation differ?
But you haven't resolved an issue with the power supply. To strengthen your belief in the situation, I would check all the voltages. If any are incorrect, we can remove components and observe if the voltage stabilizes. If the issue persists with the new PSU, it might mean the problem isn't with the PSU itself, but rather that whatever was previously handling the old one is still affecting the new one. It's better to have a high level of certainty before investing in replacements.
I used the default BIOS and even adjusted the CMOS. Still got the same outcome.
I stripped away all unnecessary components. Just the motherboard, CPU, and one RAM stick. The power cable was still attached. No fans, no mouse—same result.