When your PC no longer recognizes your graphics card, it can be quite frustrating. This issue can arise after a Windows reinstall or due to other hardware and software conflicts. Here’s a comprehensive guide to help you resolve this issue step-by-step.

1. Check Physical Connections

Power Connections: Ensure that the GPU is properly seated in the PCIe slot and that any necessary power cables are securely connected. Reseat the GPU: Power down your PC, unplug it, and carefully remove and reinsert the GPU.

2. BIOS Settings

Check BIOS: Restart your computer and enter the BIOS/UEFI settings. Make sure that the GPU is detected there. Look for settings related to onboard graphics and ensure that the dedicated GPU is set as the primary display adapter.

3. Install Drivers

Download Drivers: Go to the manufacturer’s website (NVIDIA, AMD, etc.), and download the latest drivers for your GPU. Install them after completely removing any old drivers using a tool like Display Driver Uninstaller (DDU). Safe Mode: If you can’t install drivers normally, try booting into Safe Mode and then installing the drivers.

4. Device Manager

Check Device Manager: Right-click the Start menu, select Device Manager, and look for any yellow exclamation marks under “Display adapters.” If your GPU is not listed, try scanning for hardware changes. Hidden Devices: Click “View” in Device Manager and select “Show hidden devices” to see if the GPU appears.

5. Windows Updates

Update Windows: Ensure your Windows installation is fully updated as missing updates can affect hardware recognition.

6. Check for Conflicts

Disable Integrated Graphics: If your CPU has integrated graphics, try disabling it in the BIOS to see if that helps. Unplug Other Devices: Disconnect any unnecessary peripherals that might be causing conflicts.

7. Test in Another PC

Test in Another PC: If possible, test your GPU in another computer to rule out hardware failure.

8. Try Another Slot

Try Another Slot: If you have multiple PCIe slots, try using a different one.

9. Reset BIOS/UEFI

Reset to Default Settings: Reset your BIOS/UEFI settings to default to eliminate any configuration issues.

10. Contact Support

Manufacturer Support: If none of the above steps work, consider reaching out to your GPU manufacturer's support for further assistance.

11. Reinstall Windows Again

Reinstall Windows: As a last resort, you might consider reinstalling Windows once more, ensuring that no old drivers or settings are causing the conflict.

If you go through these steps and still have issues, feel free to provide more details about your setup. We can troubleshoot further!