Pc shuts off randomly

How is the dust build-up around the heatsinks (processor, graphics card), and around the chassis air vents, and the fan blades?
Have you taken note of the system temperatures?

How is it crashing - blue screen if death, an error message, or just 'blink' turns off?

Let’s do a full workup of your system.
No personal data is published and everything shown is safe.

1) Download Speccy by Piriform.
In Speccy, click File > Publish Snapshot > Copy to Clipboard > Close.
Paste that link into your post. Is Speccy safe?

2) Download GetSystemInfo by Kaspersky.
In GSI, click Start. (takes about 10mins)
It makes a ZIP file on your desktop, drag that to their GSI Parser site.
Once analysed, paste the newly created URL into your post.

3) Download MiniToolBox by Farbar.
In MTB, tick List Installed Programs, click Go then close the program.
A file MTB.txt is created in the same folder, attach that to your post.

4) No software interrogates the Power Supply Unit so list the make/model and age.

The Segotep GM series falls into the Tier B (speculative) mid-range, so that should be OK.
See here; https://cultists.network/140/psu-tier-list/

The RTX3080 with your 850w PSU should be OK too, but you are on the borderline, see here; https://support.lumion.com/hc/en-us/articles/360003476773-Which-power-supply-do-you-need
When you replaced the PSU, is this Segotep the replacement or the original?
What was the other one you tried?

Your TCP Connections (last group at the bottom of Speccy) is impressive to say the least. Most I've ever seen on a system.
That isn't to say it's a bad thing, just that you have A LOT of ports actively open and 'phoning home'.

Your monitors are at different frequencies, we've seen issues on this forum regarding that aspect, let's see if I remember who had that experience: @PeterOz @Pyro @Malnutrition @xrobwx71

Your BIOS is July 2023, latest is Feb 2025. There may be code updates that address your issue.

Your motherboard handles memory speeds up to 5200 before over-clocking is required, so I reckon having XMP memory mode turned on isn't giving you any benefit. Try turning it off and see how things go.
Take note of the memory timings in BIOS before and after changing XMP to check that with it enabled, it does actually force the memory to run at its full speed.

Will leave open a little longer.... just in case.

problemhaver said:

I have a Segotep GM850 PSU

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Never purchase a PSU when the manufacturer ( A ) does not provide any warranty period information for the PSU on the product page and ( B ) makes false claims.

I had to go to the Segotep homepage to find any warranty information and what I found was poor, it just says that PSUs have a five year warranty which in itself shows how much or should I say lack of confidence that they have in their own product, any decent Gold efficiency rated PSU will have a minimum of a seven year warranty and those units are deemed to be the budget Gold efficiency rated range by the brand that makes them

Regarding the PCI-e 5.1 label that Segotep have stuck on the PSUs box, the claim is a load of the brown stuff intended to mislead and/or impress, only GPUs and the GPU slots on MBs come under the umbrella of anything that is PCI-e related, nowt else.

Fwiw, the first review that I read for the PSU gave it one star as it was bad.

problemhaver said:

Previously i had a agk750W PSU

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What was the brand and model name or number, if it was as poor as the Segotep it may have damaged the GPU.

Power Profile
Active power scheme: Atlas Power Scheme

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Change the Windows Power Plan to Balanced, Ultra and High Performance etc are a form of overclocking that is known to cause stability and overheating issues, the setting should only be used for gaming type notebooks that have a discrete GPU that needs the extra power, all that any other power plan does is mess with the CPUs cores and cause overheating and especially the innards of lesser brand PSUs.

problemhaver said:

Well that was a good call. It crashed again

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Please explain what happened exactly.

Software such as Windows can crash and when it does crash you get a BSOD and when enabled a crash dmp is generated, programs or games when they crash can on occasion close to the desktop but the computer will still be 100% functional.

Hardware failure such as a weak power supply and/or overheating are not software related and when a computer for example suddenly turns off, freezes or the screen goes black etc the behaviour should be described as the "computer shut down unexpectedly" or froze etc and not as having crashed as the latter implies a software issue as opposed to an obvious hardware issue when described properly.

Having the correct info means that helpers will not be looking for a software issue when the problem is clearly hardware related.

problemhaver said:

This is the power supply i had:
Amazon.com It definitely was a bad PSU.

Click to expand...

Bit of an understatement Im afraid, I suggest that you get your GPU tested on a family member or friends PC that has the appropriate spec of PSU, alternatively ask a local tech what they would charge you for testing it, the replacement PSU is marginally better than the original which may unfortunately have damaged your card.

There are things to be done with your set up but before we elaborate can you first of all address and provide the relevant feedback for each of the the points raised by Bruce in reply #4;

Bruce said:

Your TCP Connections (last group at the bottom of Speccy) is impressive to say the least. Most I've ever seen on a system.
That isn't to say it's a bad thing, just that you have A LOT of ports actively open and 'phoning home'.

Your monitors are at different frequencies, we've seen issues on this forum regarding that aspect, let's see if I remember who had that experience: @PeterOz @Pyro @Malnutrition @xrobwx71

Your BIOS is July 2023, latest is Feb 2025. There may be code updates that address your issue.

Your motherboard handles memory speeds up to 5200 before over-clocking is required, so I reckon having XMP memory mode turned on isn't giving you any benefit. Try turning it off and see how things go.
Take note of the memory timings in BIOS before and after changing XMP to check that with it enabled, it does actually force the memory to run at its full speed

Click to expand...

problemhaver said:

Many of the open ports are for a Plex server and others are for file sharing over Steam. Firefox also seems to have a lot but im not too worried about that.

Click to expand...

Sorry but gaming and streaming the likes of OBS should be done via an ethernet connection, gaming on its own using WiFi sucks nine times out of ten and there other things that aggravate it such as how many other users are on the same network and the distance from the router to name just the two.

@problemhaver - any news?

No activity - last post 12 days ago - last seen 8 days ago.

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