System has stopped working and won't restart or turn on again.
System has stopped working and won't restart or turn on again.
Start the process by removing the system from its protective casing, ideally on the motherboard tray. Keep only the RAM in the second slot. I understand this might be tricky, but it’s the best approach to avoid any contact problems. Are you using the original power cables that came with the PSU? Do you have another cable available (same box) that you could try, even a 4-pin one would suffice?
I checked the readings with your multimeter and found consistent values near 0.3 ohms across all pins. This suggests the CPU EPS 8 pin may be faulty or damaged, potentially indicating an issue with the motherboard.
I could take my PC to a shop on Monday because it's a holiday until Sunday in my area. I have limited space at home for work. I'm not sure if this is useful, but I saw some liquid patches near the VRMs a few months ago. My PC never got wet, and I don't have any liquid cooling system installed. I asked about this here, but they said it was due to thermal pads.
Consider removing the CPU, inspecting the connections, sending it back, reapplying the paste, and trying again.
You just completed the task and still faced issues. After taking it out, you noticed some thermal paste on the CPU pins and socket, which you managed to remove with alcohol and a brush. While I’m unsure if it was the cause, since the cooler hasn’t been taken off, it was present since 2018 when you purchased the PC.