Desktop computer turns off as if the power is cut

[Vatril]

Hello

 

I recently built myself a new computer. It has been working mostly great, but it randomly turns off. It is not a crash or a blue screen, it is, as if someone pulls the plug. Basically, it suddenly goes dark, and then restarts on its own.

When looking at crash logs, there aren't any. The computer is running normally until it suddenly just turns off. It of course has a few errors when starting, mainly related to some filesystem issues duo to the non proper shutdown.

 

The one thing is: The shutdowns are truly random. I have run multiple stress tests and benchmarks just fine. Sometimes it shuts down under heavy use, but its mostly just when I am doing some light web browsing or even just when its idling. Like I start the computer, open my web browser, discord, telegram, then I leave the room to get a drink and when I return it has restarted.

 

The shutdowns now happen every few days. When I originally built the computer I got a 850W PSU, the shutdowns happened way more often with that. Friends recommended I get a UPS in case I have bad wall power, but that didn't help at all. I then upgraded to a 1200W PSU. This helped a bit, but it still randomly shuts down every few days.

I live in Berlin, Germany btw, never really had power issues and the circuit in my flat should be able to handle it.

 

One minor detail, the PSU does click once when it restarts, unsure what that is. Both this one and the 850W model did that.

 

Other than the PSU swap I also redid the cabling twice, tried running it with an UPS and updated the motherboard firmware.

Temps seems normal and the random shutdowns don't seem to correlate with them at all.

 

Anyway, here are my specs:

•  be quiet! Pure Power 12 M 1200 W (originally the 850W variant)
• AMD Ryzen 9 7950X
• ZOTAC GeForce RTX 3090 Trinity OC 24GB
• MX-4 thermal paste
• be quiet! Dark Rock Pro 4
• Samsung 980 PRO NVMe M.2 SSD, 2 TB
• MSI MPG B650 Tomahawk WiFi Mainboard
• Corsair VENGEANCE DDR5 RAM 64GB (2x32GB) 6000MHz CL40
• Ubuntu 23.04

 

But yeah, I am out of ideas at this point. The computer is usable, but it is a tad anxiety inducing when you know it can turn off at any point. Especially when working on things you cant save all the time.

 

But yeah, thanks for the help!

[Ducky4104]

23 minutes ago, Vatril said:

Hello

 

I recently built myself a new computer. It has been working mostly great, but it randomly turns off. It is not a crash or a blue screen, it is, as if someone pulls the plug. Basically, it suddenly goes dark, and then restarts on its own.

When looking at crash logs, there aren't any. The computer is running normally until it suddenly just turns off. It of course has a few errors when starting, mainly related to some filesystem issues duo to the non proper shutdown.

 

The one thing is: The shutdowns are truly random. I have run multiple stress tests and benchmarks just fine. Sometimes it shuts down under heavy use, but its mostly just when I am doing some light web browsing or even just when its idling. Like I start the computer, open my web browser, discord, telegram, then I leave the room to get a drink and when I return it has restarted.

 

The shutdowns now happen every few days. When I originally built the computer I got a 850W PSU, the shutdowns happened way more often with that. Friends recommended I get a UPS in case I have bad wall power, but that didn't help at all. I then upgraded to a 1200W PSU. This helped a bit, but it still randomly shuts down every few days.

I live in Berlin, Germany btw, never really had power issues and the circuit in my flat should be able to handle it.

 

One minor detail, the PSU does click once when it restarts, unsure what that is. Both this one and the 850W model did that.

 

Other than the GPU swap I also redid the cabling twice, tried running it with an UPS and updated the motherboard firmware.

Temps seems normal and the random shutdowns don't seem to correlate with them at all.

 

Anyway, here are my specs:

•  be quiet! Pure Power 12 M 1200 W (originally the 850W variant)
• AMD Ryzen 9 7950X
• ZOTAC GeForce RTX 3090 Trinity OC 24GB
• MX-4 thermal paste
• be quiet! Dark Rock Pro 4
• Samsung 980 PRO NVMe M.2 SSD, 2 TB
• MSI MPG B650 Tomahawk WiFi Mainboard
• Corsair VENGEANCE DDR5 RAM 64GB (2x32GB) 6000MHz CL40
• Ubuntu 23.04

 

But yeah, I am out of ideas at this point. The computer is usable, but it is a tad anxiety inducing when you know it can turn off at any point. Especially when working on things you cant save all the time.

 

But yeah, thanks for the help!

I used to have issues like this and I swapped the cable and it hasn't done it since. The cable was just randomly like disconnecting kind of? But something would happen where it just wouldn't give power randomly and I'd have to fiddle with it for ever to get it to work. Try a new cable and make sure all the cables inside the pc are connected fully. Maybe even try re plugging them in and re seating things like RAM and GPU.

[Vatril]

11 minutes ago, Ducky4104 said:

I used to have issues like this and I swapped the cable and it hasn't done it since. The cable was just randomly like disconnecting kind of? But something would happen where it just wouldn't give power randomly and I'd have to fiddle with it for ever to get it to work. Try a new cable and make sure all the cables inside the pc are connected fully. Maybe even try re plugging them in and re seating things like RAM and GPU.

Do you mean the 240V power cable to the PSU or the internal cabling?

Both has been swapped tho. Originally I used my old right angled power cord, but then switched that to the one that came with the PSU. After that I redid all the cabling and reseated most components. After I got my new PSU I swapped all cables for the one supplied with that one.

[Ducky4104]

19 minutes ago, Vatril said:

Do you mean the 240V power cable to the PSU or the internal cabling?

Both has been swapped tho. Originally I used my old right angled power cord, but then switched that to the one that came with the PSU. After that I redid all the cabling and reseated most components. After I got my new PSU I swapped all cables for the one supplied with that one

CPU issues?

[Vatril]

34 minutes ago, Ducky4104 said:

CPU issues?

I mean it idles at like 45C temperature wise and I was not doing anything intensive most time it shut down most of the time.