I'm dealing with an annoying issue where my 7-year-old PC frequently shuts down unexpectedly. The only reliable fix I've found is to mess with the 24-pin power cable. I first built this PC back in 2018 and I've had a nagging feeling that the 24-pin cable wasn't properly seated from the start. Lately, every few months, my PC will shut down but still seem 'semi-on' – I can hear it working, the RAM lights up, but my fans are off and nothing appears on the screen. Holding the power button shuts it down completely, but I need a better, long-lasting solution. Has anyone else experienced this, and if so, how did you resolve it?
4 Answers
I think the issue might be with overheating or loose PSU connections. If overheating usually means a more frequent shutdown, you might want to change the PSU and see if that helps!
Hey! It sounds like you might need to check on your PSU or motherboard. Have you considered replacing any of those? Since you mentioned the 24-pin cable doesn't seem to click in properly, that could definitely indicate a loose connection.
Take a closer look at the pins on both the PSU and motherboard. If they're not making solid contact, that's probably your culprit. If you see any warping, you might need a replacement.
Replace the 24-pin cable! Sometimes the cables themselves can wear out or get damaged over time. A fresh cable could fix the problem for good.

I haven't replaced those components yet, and I've moved a lot, so I don't think it's on the external wiring side. When you say it should click in, are you talking about the cable locking mechanism?