The issue might relate to the power supply unit affecting the PC's startup.
The issue might relate to the power supply unit affecting the PC's startup.
Setup details
CPU: AMD Ryzen 5 5500
RAM: Kingston Fury 3200MHz DDR4 8GB x2
Motherboard: Gigabyte B450M DS3H
GPU: NVIDIA GTX 950 [7.5 years old]
SSD: Kingston A400 240GB [5+ years old]
HDD: WD 1TB 7200RPM [5+ years old]
NEW PSU: Cooler Master MWE 550W 80+ Gold FM (Used, from a friend, he mentioned it was only used for about 6-9 months; purchased around 2.5 years ago, replaced because the 550W wasn’t sufficient for the new GPU)
OLD PSU: Cooler Master Elite Power 600W (RS-600-ACAB-M4) [7.5 years old]
OS: Windows 10
*BIOS version: F63*
*Using an extension cord*
*Attempted to power on while connected to a wall outlet, failed*
I purchased new CPU, RAM, and motherboard in mid-December. After installation, everything functioned properly until approximately one and a half weeks. At that point, my PC began shutting down unexpectedly a few minutes into playing League of Legends or CSGO. It never overheated (shut down around 60°C). I ran a stress test with AIDA64, which crashed after 3-4 minutes. The Event Viewer displayed Error 41. Eventually, I replaced the old PSU with a nearly unused one provided by a friend.
*First day:* Setup completed, stress test passed, games ran smoothly.
*Second day:* Tried powering on PC; nothing happened. Removed new PSU, installed old PSU, tried again—functioned properly. Turned it off after a minute, removed old PSU, plugged in new one, PC started working correctly.
*Third day:* Repeated the process as before, but the PC still failed to power on. Fans didn’t spin, no lights from the motherboard or peripherals, and BIOS wasn’t detected.
I left the PC powered off for about eight days, with the old PSU also disabled, and the issue repeated.
*First day (01/09):* Operated normally.
*Second day (10/01):* Startup problems encountered.
Additional notes:
- Replaced one RAM module, reinserted HDD, updated SSD cables, slightly adjusted the PCIe cable on the GPU end—PC started working again.
- The problem appeared overnight. If left with the old PSU off for a few hours, it became functional.
Welcome to the forums, newcomer!
OLD PSU: Cooler Master Elite Power 600W (RS-600-ACAB-M4) [7.5 years old]
NEW PSU: Cooler Master MWE 550W 80+ Gold FM
The unit you had before is not suitable for your PC. Treat it like a paperweight. Joking or not, that part doesn’t fit anywhere near your computer.
I purchased a new CPU, RAM, and motherboard in mid-december.
Did you reinstall the operating system after moving to the new board? If you can access the BIOS now, it would be wise to check the current version for your motherboard.
I left the PC off for about eight days, and the PSU was also off during that time. The process repeated:
- 1st day (09.01.): Works fine
- 2nd day (10.01.): Problems starting up
It looks like a grounding issue might be the cause if replacing components triggers the system to come back on. Could you move it to another power outlet at home?
Thank you for the response Lutfij!
Have you reinstalled the operating system after moving to the new motherboard? If you can access the BIOS, now is a good moment to verify your current BIOS version for that motherboard.
I performed an OS reinstall and the BIOS version is F63.
It looks like you might be facing a grounding problem if replacing components causes the system to restart.
Another option is to turn off the power supply and unplug it from the extension cord.
If I keep the PSU switched on, it won’t turn on the following day unless I disconnect it for a certain period (I’m not sure the exact duration).
Could you move the PC to another wall outlet?
Currently, the system powers on after the PSU was removed for six hours, but I plan to test another outlet soon. The PSU needs to be active briefly before this issue appears. Are there any steps I can take in the meantime?
I'm working with an extension cable because the room layout prevents my PC power cable from reaching wall outlets near the table. However, I can adjust the PC position for testing purposes without needing the monitor.