I recently took a trip and brought my PC along. When I set it up at my family's place, I ran into a problem—initially, it wouldn't boot and showed CPU and DRAM debug lights. After flashing the BIOS, it finally booted, but now I'm facing frequent crashes identified as Kernel Power 41 errors. I've checked all the power cables and even updated the firmware, drivers, and BIOS, but the issues remain. I've also tested the RAM by removing a stick and monitored voltage levels without any clear issues. The crashes mostly happen when I open random applications, and the mouse cursor is lagging severely. It's odd because everything was working fine before the trip. Can anyone help identify the problem?
2 Answers
It sounds like your power supply unit (PSU) might be the culprit. It’s relatively straightforward to check. You can do the paper clip test to see if it's functioning at all. If it fails that, you know what the issue is. Replacing a PSU is usually one of the easier repairs, so hopefully, that's all it is!
Thanks! I’ll definitely check into that. It's frustrating because it feels like a strange coincidence that this started happening right after my trip.
You might want to reseat your RAM sticks. When you travel, sometimes they can jostle loose. Just take them all out and put them back in to make sure they're all properly seated.

Definitely try the paper clip test first! But also consider using a multimeter to check the output voltages; sometimes a PSU can pass the test but still provide unstable power, which can lead to system crashes.