I have a custom-built PC running Windows 11, and lately, it's been shutting down without any warning—just a straight power off. The power supply unit (PSU) should be sufficient for my hardware. I noticed that when this happens, the GPU flashes red for a moment, and the RGB lights turn on. I checked the motherboard connections and made sure everything was securely in place. I'm wondering if reseating the connections is a good step or if a PSU replacement might be necessary.
2 Answers
Random shutdowns can often be related to power issues. If the GPU is flashing red, it could mean it’s not receiving enough power. Make sure no power connections are shared and that everything is connected properly. It’s also worth trying to reseat the GPU just to rule out any connection issues.
It sounds like an annoying issue! Have you checked the temperatures while gaming or under load? If they’re under 70°C, overheating probably isn't the problem. It might also be a good idea to consult your GPU manual. Sometimes those red flashes indicate that the GPU isn’t getting enough power from the PSU. Just ensure that you’re using separate power cables for each PCI-E connection and consider reseating the GPU too.
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