PC keeps turning off on its own, no matter what I fix with different parts!
PC keeps turning off on its own, no matter what I fix with different parts!
My computer is shutting down all by itself for months. I need help figuring this out so I can fix it. Anyone could use their help, thanks a lot.
Here are my computer specs: Motherboard: X570-PLUS with WiFi - The BIOS version is 5021 Graphics card: 7800 XT Processor (CPU): Ryzen 5700X3D Cooling: Thermalright Peerless Assassin 120 SE Power Supply Unit (PSU): Corsair RM750x
Everything was bought new. Here are the fixes I've already tried: Replacing the power supply, swapping out the CPU and RAM, updating graphics drivers - both manually and by automatically updating the BIOS. I even tried to use OCCT to try to trigger a shutdown (but that didn't work).
Here is more info that might help or not be helpful if it's not useful for you:
The PC shuts down completely on its own whether I am gaming or just sitting there doing nothing.
I can make the shut downs happen on purpose by doing specific actions in certain games with other programs running. The shutdowns come in different forms, including:
The screen goes black.
The PC shuts off completely. A couple seconds later it turns back on.
The PC shuts down again and comes back on in less than a quarter of a second (this happens most often).
The PC shuts down and doesn't turn back on until I press the power button to restart it.
I also tried pressing the power button but nothing happened, so I had to cut off the power and then reconnect it to get the PC working again. Sometimes the PC just restarts instead of shutting off completely.
I had a new RM750x power supply, and it took over where my old refurbished RM650x used to be.
Most random restarts or power outages happen for two simple reasons: 1) Your CPU or GPU gets too hot and the computer shuts itself down to save itself from damage. 2) The power supply unit (PSU) isn't sending enough electricity to your graphics card, or it can't keep the voltage steady enough for your PC to work normally. First, check how hot your CPU and GPU get when they aren't working hard and when they are being used a lot. If those temperatures feel normal then you likely have a problem with your power supply, not your computer parts. Since RMx makes high-quality power supplies, I don't think the RM750x would break unless something went wrong inside it. So what is your current temperature reading? Also, if you get shocked when you turn off the PC, that might be because of a weak voltage regulator (VRM) on your motherboard or maybe just bad electricity in the grid. A UPS can help stop problems from coming through the power line.
My CPU and GPU were hot when they stopped working. But when I started using them, the CPU stayed at about 60°C and my GPU reached 70°C. Even though this happened right after I changed the power supply, I still think it's not a PSU problem because everything worked fine again the same day. What should I do next?
Here is a rewrite of your text using simpler words:
The main problem seems to be figuring out why the computer stops working when it isn't being used. Usually, high heat or bad power supply units are the first things that come to mind. But since your computer doesn't get too hot and you already tested with two different power supplies (or a refurbished one), it's hard to blame just those parts. That said, if your PC dies right away when gaming, that points more toward the main electricity grid rather than the hardware inside.
Did you notice these problems start right after buying the new computer, or did they appear later? For power grid issues, the best fix is a UPS (uninterruptible power supply). You need something like a line-interactive model with at least 1300VA capacity. These devices can handle very short blackouts that are hard to feel even with your eyes closed. One specific model, the RM750x from 2021, has a hold-up time of just 26.6 milliseconds. This means it keeps your computer and power running for up to that small amount of time before stopping if the power goes down longer.
To understand how fast this holds on, imagine normal takes a little over one second (1000ms). It's hard to register a blackout lasting just 50 milliseconds because humans have trouble noticing things that happen so quickly. However, your computer can still detect it and shut down safely. That is why I recommend buying a UPS. These hidden power cuts often cause the same kind of problems as overheating or bad power supplies. For this reason, both my computers are backed up with two different UPS units (one for each PC).
If you want to know more about UPS systems, I can send over some details in my next reply. But keep in mind that good quality UPS units cost a lot of money too. Also, sometimes the motherboard's voltage regulators act up, though they are rare to fail. Sadly, fixing that requires replacing the whole motherboard which is tough to tell exactly what went wrong.
All these signs point to either high heat or bad power supplies. But something about your computer stopping when it isn't being used throws a surprise into the mix and points more toward the main electricity grid (or rarely, the motherboard's voltage regulators). Personally, I would try using a third different good quality power supply that is known to work well from another brand, like Seasonic or Super Flower. Please avoid trying used or refurbished ones for this test.
If fixing it with two new good power supplies doesn't work after the third one (for example, if you get a working one from Seasonic Focus or Super Flower Leadex), then I think we need to buy an UPS. Oh, here is a great idea to try: take your PC to a friend's house and see if it stops there too. If everything still works fine even under the heaviest load there, something must be wrong with the wiring in your home. In that case, getting a UPS is the best solution.
Thank you for all the detailed replies, and now I have a pretty strong guess that the electricity grid is causing most of my problems. Even when I first bought this PC or earlier with a different one from a few years ago, I had been getting random power cuts. With so many outages in just the last month, it probably means a UPS won't be able to help me. If that's not true, I would really like more information on those battery backup devices called UPPs.