Problem with the PC's power supply is occurring.
Problem with the PC's power supply is occurring.
I've owned this PC since March 2023 and never faced any problems. Recently it started booting on its own... I entered the room and noticed it was up without my action. I began searching for a fix and eventually adjusted the power plan settings to disable wake timers in the control panel, then turned off the machine. The following day (today) I attempted to start it again, but it didn't work. The power supply seems to be functioning properly, the unit is plugged in, yet it doesn't respond. I opened the case, tried resetting the motherboard by touching the pins, but nothing happened. I moved the PC to my partner's desk and connected it there (using her power cable); it booted successfully. At this point I'm convinced the issue might be with the power supply unit. I suspect it's not the power button or the connection between the button and the board, since jumping the pins didn't resolve the problem. TL;DR – My PC now powers on by itself, I've changed settings, but it won't boot unless I press the power button. Trying to jump the motherboard pins also failed.
Hi. Start by resetting the CMOS on your MBoard to eliminate irregular behavior. Disconnecting the computer from power differs from simply turning it off, which could explain why it restarted after moving. Clearing the CMOS should allow at least one successful boot. Windows may now alter BIOS configurations—only with a fast shutdown turned off can Wake-on-LAN function operate correctly, so settings might shift after switching into Windows. Restore your original BIOS preferences during the first reboot. In power settings, enable fast shutdown to prevent booting via Wake-on-LAN, which could have been the initial problem. On subsequent starts, enter BIOS, navigate to power options, and disable any auto-boot or power-loss recovery features. Good luck!
I attempted those things but didn’t notice any changes. Recently, the PSU emitted a repetitive ticking sound with brief clicks, without a clear pattern. I’m not sure if these noises were always present since my PC has been on the desk for some time, which might make them more obvious.
Capacitors may degrade over time, though they still age. For models made in 2023, it seems premature. Unless they were specially chosen for a do-it-yourself build, they’re likely budget options. This doesn’t seem typical—especially if the issue isn’t related to the fan. A failing power supply unit could explain your problems (the motherboard powers on after a power loss, so if the backup current was uncertain, it might trigger the board to activate, and a weak PSU can definitely prevent startup). They’re generally cheaper to swap than other components, making it worth checking. Avoid cutting corners—quality parts should last at least ten years and support your PC’s performance. Unfortunately, the part that usually needs replacement more often than a power supply is the motherboard. Linus will probably give you a screwdriver