Random reboot once a week followed by screen artifacts until restart GPU or RAM related

cank5236156102da

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Dec 19, 2025
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Hi everyone, I’m experiencing a strange and very random issue and I’m trying to understand what might be causing it.

Specs:

CPU AMD Ryzen 7 9800X3D GPU MSI GeForce RTX 5080 Shadow 3X 16 GB Motherboard MSI MAG X870 Tomahawk WiFi RAM G Skill 64 GB 2x32 GB DDR5 6000 MHz CL36 PSU 1000 W Monitor 180 Hz Operating system Windows 11 BIOS latest version GPU driver latest NVIDIA driver clean install

I do not use MSI Afterburner or any other overclocking or tuning software There is no GPU overclock and no GPU undervolt The only non default setting in my system is EXPO enabled for RAM

RAM profile 1: Memory frequency 6000 MHz default EXPO setting EXPO timings CL36 preserved DRAM voltage 1 35 V as defined by EXPO All other memory related settings left on auto

+ErP ready thing is also enabled idk if that matters?

About once a week at a completely random time the mouse starts stuttering briefly and then the system suddenly reboots by itself After the PC boots back into Windows I see screen artifacts pixel noise or horizontal static like lines across the display Temperatures are normal and there are no error messages

After this happens the system is usable but the artifacts are clearly visible If I manually restart the PC once more the screen artifacts are completely gone and the system runs perfectly fine No crashes no instability no visual issues until the next random occurrence which usually happens days later

The issue does not depend on load and can happen at idle or during light usage When the system is running normally I can game or stress the system without any problems

I am trying to understand whether this behavior could be related to RAM EXPO instability or if it sounds more like a GPU issue or a driver or firmware related edge case
 
can you attach picture of horizontal line or artifact? when problem happens, have you ever tried turn off and on the monitor instead of doing system restart?
 
Thank you for your attention.
Here you go. There are two separate cases: the first one was taken last week, and the second one was taken last Thursday. After I refresh the screen or hover the mouse over the scattered area, it disappears.

IMG_1B805C96-99B1-4365-9577-19E2C49B46BF.jpeg
IMG_8368.jpeg
 
With that screenshot, it just looks like a bad graphics card. Perhaps the behavior worsen over time. It's not new that some cards only have problem when being idle. :cry:
Its unimaginable I have paid almost my 1month salary to get this, and its only been 4 months since I got this…… Is there any thing that I can do?
 
Honestly speaking if I were you, since it only happens once in a while, I'll ignore it for now and when it becomes more frequent, then start the RMA process.
The warranty should last couple years. And I mean it's just my assumption that the card can likely be bad, it can still be something else.
It'd be easier if you have spare parts to narrow down the cause after all.
 
Hi everyone, I’m experiencing a strange and very random issue and I’m trying to understand what might be causing it.

Specs:

CPU AMD Ryzen 7 9800X3D GPU MSI GeForce RTX 5080 Shadow 3X 16 GB Motherboard MSI MAG X870 Tomahawk WiFi RAM G Skill 64 GB 2x32 GB DDR5 6000 MHz CL36 PSU 1000 W Monitor 180 Hz Operating system Windows 11 BIOS latest version GPU driver latest NVIDIA driver clean install

I do not use MSI Afterburner or any other overclocking or tuning software There is no GPU overclock and no GPU undervolt The only non default setting in my system is EXPO enabled for RAM

RAM profile 1: Memory frequency 6000 MHz default EXPO setting EXPO timings CL36 preserved DRAM voltage 1 35 V as defined by EXPO All other memory related settings left on auto

+ErP ready thing is also enabled idk if that matters?

About once a week at a completely random time the mouse starts stuttering briefly and then the system suddenly reboots by itself After the PC boots back into Windows I see screen artifacts pixel noise or horizontal static like lines across the display Temperatures are normal and there are no error messages

After this happens the system is usable but the artifacts are clearly visible If I manually restart the PC once more the screen artifacts are completely gone and the system runs perfectly fine No crashes no instability no visual issues until the next random occurrence which usually happens days later

The issue does not depend on load and can happen at idle or during light usage When the system is running normally I can game or stress the system without any problems

I am trying to understand whether this behavior could be related to RAM EXPO instability or if it sounds more like a GPU issue or a driver or firmware related edge case
This sounds like a signaling issue between your CPU and GPU, likely triggered by PCIe 5.0 instability on the X870 platform. Since the artifacts vanish after a second manual restart, your RTX 5080 hardware is likely fine—it's just failing to initialize correctly during the "dirty" reboot.

Quick Fixes to Try:

  1. Force PCIe Gen 4: In BIOS, change your PCIe slot speed from "Auto" or "Gen 5" to Gen 4. The RTX 5080/X870 combo is extremely sensitive to signal noise, and Gen 5 offers zero performance gain for gaming currently.
  2. Enable FCH Spread Spectrum: This BIOS setting helps reduce EMI/signal interference, which often stops the random mouse stutter and subsequent reboots on MSI boards.
  3. Monitor PCIe Link Speed: Use GPU-Z after a reboot. If it shows @ x16 1.1 or 2.0 instead of 4.0/5.0, the artifacts are caused by the bus getting "locked" in a low-power state.
  4. Increase SoC Voltage: 64GB of RAM is heavy for the 9800X3D's memory controller. Manually set CPU SoC Voltage to 1.25V - 1.30V to stabilize your EXPO profile.
I was recently comparing these 9800X3D/X870 power delivery stats on this laptop page, early BIOS versions for Zen 5 are still iron out these handshake bugs.

Try forcing Gen 4 first; it’s the most common "fix" for RTX 50-series instability on new motherboards.
 
This sounds like a signaling issue between your CPU and GPU, likely triggered by PCIe 5.0 instability on the X870 platform. Since the artifacts vanish after a second manual restart, your RTX 5080 hardware is likely fine—it's just failing to initialize correctly during the "dirty" reboot.

Quick Fixes to Try:

  1. Force PCIe Gen 4: In BIOS, change your PCIe slot speed from "Auto" or "Gen 5" to Gen 4. The RTX 5080/X870 combo is extremely sensitive to signal noise, and Gen 5 offers zero performance gain for gaming currently.
  2. Enable FCH Spread Spectrum: This BIOS setting helps reduce EMI/signal interference, which often stops the random mouse stutter and subsequent reboots on MSI boards.
  3. Monitor PCIe Link Speed: Use GPU-Z after a reboot. If it shows @ x16 1.1 or 2.0 instead of 4.0/5.0, the artifacts are caused by the bus getting "locked" in a low-power state.
  4. Increase SoC Voltage: 64GB of RAM is heavy for the 9800X3D's memory controller. Manually set CPU SoC Voltage to 1.25V - 1.30V to stabilize your EXPO profile.
I was recently comparing these 9800X3D/X870 power delivery stats on this laptop page, early BIOS versions for Zen 5 are still iron out these handshake bugs.

Try forcing Gen 4 first; it’s the most common "fix" for RTX 50-series instability on new motherboards.
I will try theese thank you
 
Thank you for sharing these. I have updated my bios to newest version (7E51v1A71) i hope they fixed it with this update. I will let you know
 
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