Question PC randomly shuts down, SSD missing in BIOS – - need help Identifying the cause ?

[Oxej]

Hi everyone,

I built this system about a year ago:

• CPU: Intel Core i7 14700KF
• GPU: ASUS TUF GAMING GeForce RTX 4080 SUPER
• SSD: Samsung 2TB 990 PRO NVMe
• Motherboard: ASUS TUF GAMING Z790-PLUS WIFI
• RAM: G.SKILL 64GB (2x32GB) Trident Z5 RGB 6400MHz CL32 DDR5 1.4V Dual Kit
• Cooling: ASUS TUF GAMING LC II 360 ARGB 360mm
• PSU: ASUS TUF GAMING 1000G 1000W 80+ Gold
• Case: ASUS TUF GAMING GT502 v2

I've been using this system without any issues for a year. I have always updated the BIOS as soon as new versions were released.

Problem Description​

While browsing on Google Chrome, my PC suddenly shut down and booted into BIOS. At first, I didn’t understand what happened, so I exited BIOS, but it kept booting back into it 3-4 times. Then, I force shut down the system by holding the power button, waited for 1-2 minutes, and restarted. This time, it booted successfully.

There was no BSOD (Blue Screen of Death) or minidump file, so I checked the Event Viewer logs:
Events on February 5
1) https://drive.google.com/file/d/16uHBwrcGQ3b0ch6iBegTBJM-jPuiMU7o/view?usp=sharing
2) https://drive.google.com/file/d/1ZOqKK0C0D3u76ZIN5Cli863FEzR8BgPR/view?usp=sharing
From what I can see, there are "volmgr" and "Kernel-Power" errors. Please correct me if I’m wrong.

To test further, I left my system idle for 24 hours, and it shut down again. This time, when I entered BIOS, the SSD was missing. I exited BIOS and forced the system to reboot multiple times. After several attempts, I finally got this error message:

https://imgur.com/a/problem

View: https://imgur.com/a/problem-GMEu1Xh


I noticed that my PCIEX16 link speed was changed to Gen3 instead of Auto/Gen4 (I don’t know why). I switched it back to Auto or Gen4. Could this be related to the GPU? I don’t think so, but I’d like to hear your thoughts.

Narrowing Down the Issue – CPU, SSD, GPU, or Motherboard?​

To investigate further, I moved the SSD from M.2_1 slot to M.2_2 slot and tested for 24 hours. The system ran fine for a while, but then shut down again. Here is the latest Event Viewer log:
Events on February 20
https://drive.google.com/file/d/1ktL9y6ISaAmpzW3fbZUJqrMWFm-YsNpr/view?usp=sharing

Tests I Have Done So Far​

✔ RAM: Ran MemTest86, no errors.
✔ GPU: Ran FurMark2 benchmark, no issues.
✔ CPU: Ran Cinebench R24 benchmark, everything stable.
✔ PSU Stability: Stress tested both CPU & GPU simultaneously for 3-4 minutes, no shutdowns.
✔ SSD Health: Ran Samsung Magician & CrystalDisk benchmarks, results were normal.
✔ SSD Self-Tests: Performed short, extended, and SMART tests via Samsung Magician, all passed.

Benchmark Tests:

https://imgur.com/a/probllem

View: https://imgur.com/a/probllem-bVf6TiL


My BIOS and Windows 11 are fully up to date. I also reset BIOS to default settings and reinstalled the latest version (without removing the CMOS battery).

I monitored PSU voltage values using HWMonitor for an hour, and everything seemed stable. System temperatures (CPU, GPU, SSD) are normal, but let me know if you need specific values like VIN temperatures from the motherboard.

Need Help Identifying the Faulty Component​

I can’t send the whole system for service since I bought the parts separately. If I can pinpoint the failing component, I can claim warranty service for it.

What do you think? Is the issue with the CPU, SSD, GPU, or motherboard? Any suggestions for further testing?

Thanks in advance! 😊

 

[Oxej]

If there is a problem opening the pictures or links, please state and I will do what I have to do.

 

[Oxej]

Additionally, there is another warning in the Event Viewer logs related to PCI:

https://drive.google.com/file/d/1jqHkOFW8r96hdpD37FELFP9irp1yzC7A/view?usp=sharing

Also, I noticed something strange in the BIOS—there are weird blue artifacts on the screen. Here’s a photo of them:

https://imgur.com/a/RLQNuNE

View: https://imgur.com/a/RLQNuNE


Lastly, I have encountered a few BSOD (Blue Screen of Death) errors, and I have collected minidump files:

1) https://drive.google.com/file/d/1U04ti7pyJ-Zeq2nqUD4He2d1PDsT2sYI/view?usp=sharing

2) https://drive.google.com/file/d/1vMyYFsyuNUo4-6QiXCCwrqiq5DvKCPEq/view?usp=sharing

 

[Bob.B]

Additionally, there is another warning in the Event Viewer logs related to PCI:

https://drive.google.com/file/d/1jqHkOFW8r96hdpD37FELFP9irp1yzC7A/view?usp=sharing

Also, I noticed something strange in the BIOS—there are weird blue artifacts on the screen. Here’s a photo of them:

https://imgur.com/a/RLQNuNE

View: https://imgur.com/a/RLQNuNE


Lastly, I have encountered a few BSOD (Blue Screen of Death) errors, and I have collected minidump files:

1) https://drive.google.com/file/d/1U04ti7pyJ-Zeq2nqUD4He2d1PDsT2sYI/view?usp=sharing

2) https://drive.google.com/file/d/1vMyYFsyuNUo4-6QiXCCwrqiq5DvKCPEq/view?usp=sharing

Reseat the gpu in the slot and also the power plugs...both ends......test.

 

[Oxej]

Reseat the gpu in the slot and also the power plugs...both ends......test.

I have already reseated the GPU in the slot. I am sure it is properly seated.
I also made sure that the cable connected to the GPU is securely in place.

I didn't fully understand what I need to do. Do you want me to measure the cable ends with a digital multimeter? Or should I disconnect and reconnect the cable from both the PSU and the GPU?

 

[Bob.B]

I have already reseated the GPU in the slot. I am sure it is properly seated.
I also made sure that the cable connected to the GPU is securely in place.

I didn't fully understand what I need to do. Do you want me to measure the cable ends with a digital multimeter? Or should I disconnect and reconnect the cable from both the PSU and the GPU?

Or should I disconnect and reconnect the cable from both the PSU and the GPU?......yes

 

[Oxej]

Or should I disconnect and reconnect the cable from both the PSU and the GPU?......yes

I can do this. I don’t want you to misunderstand me, but what difference would it make? Because in the current situation, I’m already running all kinds of benchmark tests. If there were a problem, wouldn’t I have noticed it?

 

[Bob.B]

I can do this. I don’t want you to misunderstand me, but what difference would it make? Because in the current situation, I’m already running all kinds of benchmark tests. If there were a problem, wouldn’t I have noticed it?

It just gets it out of the mix and it's free.

 

[Oxej]

It just gets it out of the mix and it's free.

Okay, I'll do it.

Someone else made this suggestion.

Change the PCIEX16 speed from auto --> gen4
Change the SSD to GEN4 in the same way.

I'll do that and report the results, it may take a while to update.