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    Desktop PCs
    gpu

    PC GPU Not Detected or Crashing

    Quick Answer

    This guide helps diagnose and fix issues where your PC graphics card is not detected or causes crashes and display problems.

    Please note: This guide is provided for informational purposes only. Any steps you choose to follow are at your own discretion and risk. If you're unsure, we recommend booking a professional diagnosis.

    Quick Checks

    Try these fast checks first — they solve most cases.

    1. 1

      Check display cable

      Ensure monitor cable is plugged into GPU ports, not motherboard.

    2. 2

      Reboot your PC

      A restart can resolve temporary driver glitches.

    3. 3

      Check BIOS display settings

      Ensure primary display is set to PCIe/Dedicated Graphics.

    4. 4

      Reseat the GPU

      Remove and firmly reinsert the GPU into its PCIe slot.

    5. 5

      Try different cable/port

      Test with a different display cable or GPU port.

    Guided Troubleshooting

    Answer these questions to narrow down the issue.

    Can you access Safe Mode?

    Did this start after a driver update?

    Are there diagnostic LEDs lit on the motherboard?

    Possible Causes

    Loose GPU or power cable

    Very Common

    GPU not fully seated or power cables disconnected.

    Driver issues

    Common

    Corrupted or incompatible graphics drivers.

    Insufficient PSU power

    Moderate

    PSU cannot provide enough stable power under load.

    Faulty PCIe slot

    Less Common

    Damaged motherboard slot prevents communication.

    Overheating GPU

    Moderate

    Excessive heat causes throttling and crashes.

    GPU hardware failure

    Rare

    Component failure on the graphics card itself.

    If the cause requires professional attention, see Fix Desktop PC slow performance issues.

    Self-Fix Instructions

    Safe steps you can try at home.

    Clean install graphics drivers

    1. Boot into Safe Mode if possible. 2. Download DDU (Display Driver Uninstaller). 3. Run DDU and select Clean and restart. 4. Install latest drivers from NVIDIA or AMD website.

    Reseat GPU and power cables

    1. Power off and unplug PC. 2. Remove GPU from PCIe slot. 3. Reinsert firmly until clip engages. 4. Reconnect all GPU power cables.

    Test in different slot or PC

    1. Try another PCIe x16 slot if available. 2. If possible, test GPU in a different PC. 3. This determines if GPU or motherboard is faulty.

    Monitor temperatures

    1. Install HWMonitor or MSI Afterburner. 2. Check GPU temps under load (should stay below 85C). 3. Clean GPU heatsink and fans with compressed air.

    Safety Warnings

    • Always disconnect power before opening the PC case.
    • Use an anti-static wrist strap when handling components.
    • Do not force components into slots.
    • Only modify BIOS settings you understand.

    When troubleshooting isn't enough

    If these steps didn't resolve the issue, a professional diagnosis can identify the root cause.

    FixFix Labs is not responsible for pre-existing data loss or undisclosed damage.

    All repairs carry inherent risk. Complex or liquid-damaged devices may have unpredictable outcomes.

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