Hey everyone! I'm having a frustrating issue with my computer where it shuts down completely without warning, kind of like a power outage. This happens at random times, especially when there's a change in load. Sometimes it restarts fine, but other times it powers off again shortly after I log into Windows. There have been no issues in the BIOS or during the login phase, and it's tough to replicate the problem, even when running CPU or GPU benchmarks. I've been monitoring the voltages with HWiNFO and noticed the 5V rail dropped to about 4.7V while idle, so I just replaced my old power supply with a new 1000W unit. While that improved the voltage, the crashes are still happening. I logged the moment of the crash, but it seems not much can be concluded from it since the log ends abruptly. I've noticed that the CPU load spiked from 15% to 72% right before the crash, and I've heard that the RTX 40 series can be sensitive to load changes. Does anyone have advice on what to do next or any additional data I should check? My system has been stable for over two years, but these shutdowns are a new problem:
- CPU: AMD Ryzen 7 7800X3D
- GPU: MSI RTX 4080 Gaming X Trio
- Motherboard: MSI X670 Tomahawk WiFi
- Power Supply: 1000W (just replaced)
2 Answers
I had a similar issue recently! My girlfriend experienced it too, and so did some others I've seen online. In my case, I could make it crash every time I ran FurMark; it would shut off within five seconds like the power was cut. What helped for me was reseating the GPU and RAM, but it got stuck at a DRAM light. After clearing the CMOS, I updated the BIOS and turned EXPO back on. After that, everything ran smoothly. What BIOS version are you on currently, and do you have EXPO enabled?
If you’re seeing that voltage drop, it's definitely worth double-checking your connections and the new power supply. Make sure that all your cables are securely connected and consider testing with a different GPU if possible. You might also want to run a memory test to rule out RAM issues since flaky RAM can sometimes cause similar shutdowns. As for your log data, you should look more closely at what programs are running or what tasks you're performing just before the spikes. Sometimes it helps to monitor temperatures to ensure nothing is overheating.
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