Hey everyone, I built my PC back in August 2019, and I've been noticing some annoying issues lately. It's been rebooting randomly, which started out infrequently but has gotten worse over time—sometimes rebooting twice in a row! At first, I thought it might be a program causing the problem since I mostly use Linux Mint, but now I'm not so sure.
Here's what I have: a Corsair DRAM DDR4 Vengeance RAM (16GB), a Gigabyte GeForce RTX 2060 GPU, a Nox Hummer X 700w PSU, an Intel i7-8700 CPU, and an ASRock Z390 Pro4 motherboard. I also have two SSDs (one is a newer WD_BLACK SN770 NVMe 1TB) and an HDD, plus a few fans and a CPU cooler.
I've done a couple of memtests, swapped the RAM slots, and the SSD is pretty much new, so I'm lost as to what's causing these reboots. I talked to someone from Deepseek and shared logs with them, but I don't really grasp all the technical details they discussed about voltages. Also, I'm not quite sure how much wattage I should look for if I decide to replace my power supply. I want something that could support a future CPU upgrade, too.
I haven't changed any hardware settings yet. I'm working on grabbing more info and am planning to apply some thermal paste soon since I have a spare stick. Right now, I'm running an OCCT CPU test, and I'll share those results. Any help would be greatly appreciated!
5 Answers
From what you've described, it doesn’t sound like a PSU issue just yet, but it's worth checking. You can use hwinfo64 to monitor your power draw. Ideally, it should be around 70% of your PSU's wattage. If you're just looking for an upgrade, 600W should be more than enough to give you some headroom. Also, check if you've got any overclocks active that could be causing the instability, and note if the reboots happen under specific loads or activities.
When considering a PSU upgrade, I wouldn't just focus on wattage alone; you should also check performance ratings. For most setups, 700W is generally sufficient unless you're going for a high-end GPU. Just make sure to get a reliable brand. Also, PCPartPicker is a good site for checking your system's power needs!
Had a similar reboot issue last year. Turned out one of my PSU cables was faulty, which could be the case for you too. I would suggest checking the entire PSU and its connections before you decide to replace it.
You mentioned random reboots, and overheating might be the culprit. Make sure to clean out any dust and reapply thermal paste to your CPU. Given that your setup is around 6-7 years old, refreshing that thermal paste can really help. If you're considering a new PSU, a 600W+ unit would be adequate, especially if you plan to upgrade your CPU later.
Make sure to check your CPU and GPU temps regularly, especially under load. You mentioned using an OCCT test; how are your temperatures holding up? If they spike too high, that could definitely lead to instability.
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