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PC restarts randomly in-game without a blue screen

Paulidiot Posted messages 2 Registration date   Status Member Last intervention   -  
Winux01 Posted messages 267 Registration date   Status Member Last intervention   -

PC that restarts randomly in-game despite replacing nearly all components

Hello,

I’m asking for help because I’m really running out of ideas.

I bought a PC assembled by PC Memory.

Original configuration

  • Ryzen 5 7500F
  • Radeon RX 9060 XT 16 GB
  • Sapphire Pure B850A WiFi 7
  • 16 GB DDR5 Kingston Fury Beast
  • Crucial T500 1 TB NVMe SSD
  • Be Quiet! 750 W Power Supply
  • Windows 11 Pro

Symptoms

Since day one, the PC restarts completely randomly.

There is:

  • no blue screen,
  • no freeze,
  • no graphic artefacts.

The screen goes black and the PC restarts instantly, exactly as if I pressed the Reset button.

The problem occurs mainly in-game (EA Sports FC 26, Battlefield 6), and once under Lightroom.

Sometimes the PC restarts after 15 minutes, sometimes after several hours of gaming. It is impossible to reproduce the problem systematically.

What I have already tried

BIOS

  • BIOS updated with the latest available version.
  • BIOS settings reset to default.
  • EXPO enabled and then disabled.

OCCT tests

I ran the tests:

  • CPU
  • GPU
  • Power
  • RAM

No crash. No error detected.

Temperatures

Temperatures are perfectly normal:

  • GPU ≈ 60°C in-game
  • CPU cooled by a Corsair 360 RS

No overheating.

Memory

Thinking it could be a RAM issue, I ran MemTest86.

Result:

  • 4 complete passes
  • 0 errors

I also tested with EXPO on and off. Restarts can occur in both cases.

Software

  • Windows 11 up to date
  • AMD chipset drivers installed
  • Latest NVIDIA drivers installed

Windows Events

The Event Viewer only shows a Kernel-Power 41, with no error just before the restart.

Components replaced

Thinking of a hardware fault, I replaced several components.

New configuration:

  • MSI B850 Gaming Plus WiFi
  • Gigabyte RTX 5070 Eagle OC 12 GB
  • Corsair RM850e 850 W
  • 32 GB DDR5 Lexar Thor 6000 CL36 (2×16 GB)

The only original hardware left from the initial configuration is therefore:

  • the Ryzen 5 7500F
  • the Crucial T500 SSD

Despite all these changes, the problem is exactly the same.

I even tried plugging the PC into an uninterruptible power supply to ensure the restarts aren’t due to power instability at home. But without success.

At this stage, I don’t know where to look anymore.

In your opinion, what would be the most likely cause?

If you have any leads to explore I’m all ears. I’m desperate.

Thanks in advance for your advice.


1 answer

  1.
    Winux01 Posted messages 267 Registration date   Status Member Last intervention   18
     

    Hello,

    Since the PC seems to be recent and you didn’t assemble it yourself, the only thing we can recommend is to have the warranty claim processed.

    You can file a userdiag for a more complete test.

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    1. Winux01 Posted messages 267 Registration date   Status Member Last intervention   18
       

      Games using kernel-level anti-cheat on Windows (Call of, Valorant & Co) are prone to crashing the PC, and there’s nothing we can do about it, aside from keeping the BIOS up to date against the security module’s vulnerabilities.

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      1. Paulidiot Posted messages 2 Registration date   Status Member Last intervention   > Winux01 Posted messages 267 Registration date   Status Member Last intervention  
         

        I understand your advice regarding the warranty, but I find the remark about “not improvising as a tinkerer” a bit inappropriate.

        I didn’t replace components at random. I proceeded by elimination to identify the fault.

        To date, I have done:

        • BIOS update and testing with default settings.
        • EXPO enabled then disabled.
        • OCCT (CPU, GPU, RAM and Power) with no errors or restarts. As well as userdiag.
        • MemTest86: 4 complete passes, 0 errors.
        • CrystalDiskInfo: SSD at 100% health.
        • SFC /scannow and DISM: corrupted system files were detected and repaired.
        • Replacement of RAM, power supply, motherboard and graphics card. The problem remained strictly identical.

        Regarding the anti-cheat hypothesis, I considered it. However, the problem does not occur only on games using anti-cheat. I also had a restart under Lightroom and the problem already appeared on Star Citizen. The anti-cheat might reveal a stability issue, but it does not by itself explain all the symptoms.

        My goal is simply to diagnose the fault methodically before concluding a hardware defect. If you have an additional technical lead, I’m obviously open to it.

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      2. Winux01 Posted messages 267 Registration date   Status Member Last intervention   18 > Paulidiot Posted messages 2 Registration date   Status Member Last intervention  
         

        You replaced components by elimination, except that normally you take other discounted components to test before changing, like with a technician; you don’t buy other components unless you’re sure.

        Even the motherboard uses diodes to indicate a technical failure, then you check the temperature, voltage, watts, and stability with applications as you did, but in a more global way, like userdiag as the alternative from the start.

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