Q: My NVIDIA graphics card disappeared from Windows but is physically installed. What can I do?
A: Voyis VSLAM requires a supported NVIDIA GPU, so the card must be visible to Windows. If it has disappeared but is physically installed, try these first-step checks:
- Check Device Manager: open Device Manager (right-click Start, or run devmgmt.msc) and look under Display adapters. A missing card, or one shown with a yellow warning triangle, points to a driver or detection issue. Use View > Show hidden devices to reveal it.
- Reseat the card and check power: with the computer powered off, make sure the GPU is fully seated in its PCIe slot and that all PCIe power connectors are firmly attached.
- Reinstall the driver: uninstall the current NVIDIA driver, restart, then install the latest driver from NVIDIA. A clean driver reinstall often restores a card that has dropped out of Windows.
- Check the BIOS/UEFI: confirm the dedicated GPU / PCIe slot is enabled and not disabled in favour of onboard graphics.
If the card is still not detected, the pages below cover additional troubleshooting steps reported by users with the same or similar issue: