Graphics Card Not Detected? 7 Fixes for Windows

Fix 1 Check Device Manager

1. Right click Start then Device Manager
2. Expand Display adapters
3. Look for your dedicated GPU (NVIDIA or AMD) listed alongside your integrated graphics
4. If the GPU shows with a yellow warning icon: right click then Update driver
5. If the GPU does not appear at all: check BIOS settings (Fix 3) and physical connection (Fix 5)

Fix 2 Update or reinstall GPU driver

• Download the latest driver directly from nvidia.com (NVIDIA) or amd.com (AMD)
• Run Display Driver Uninstaller (DDU) in Safe Mode to completely remove the existing driver
• Restart in normal mode and install the downloaded driver
• Restart again and check Device Manager the GPU should appear without errors

Do not use Windows Update or Device Manager to find GPU drivers they frequently install outdated versions. Always download directly from the GPU manufacturer.

Fix 3 Check BIOS PCIE settings

1. Restart PC and enter BIOS (usually Del, F2, or F12 at startup)
2. Find Advanced or Chipset settings
3. Look for Primary Display or Graphics Configuration setting
4. Change from Integrated Graphics to PCIe or Auto
5. Save and exit BIOS sometimes defaults back to integrated graphics after a Windows update

Fix 4 Check power connectors

Most dedicated GPUs require 6 pin or 8 pin PCIe power connectors from the power supply. If the power connector is loose or disconnected, the GPU will not be detected. Open the case and confirm the power connectors are firmly seated in the GPU. Modern GPUs with 16 pin (12VHPWR) connectors require the connector to be fully inserted a partially inserted 12VHPWR connector is a known cause of GPU detection failure.

Fix 5 Reseat the GPU in the PCIe slot

1. Power off and unplug the PC
2. Remove the GPU from the PCIe slot completely
3. Clean the gold contacts on the GPU with a clean eraser then blow off the eraser debris
4. Clean the PCIe slot with compressed air
5. Reinsert the GPU firmly until the PCIe retention clip clicks into place
6. Reconnect power cables and power on check Device Manager

Fix 6 Try a different PCIe slot

Most motherboards have a primary PCIe x16 slot and one or more secondary slots. If the GPU is not detected in the primary slot, try the secondary slot this rules out a damaged primary slot as the cause. Note that secondary slots may run at PCIe x4 or x8 speeds rather than x16, which will show a slight performance reduction but confirms whether the GPU itself is working.

Fix 7 Test the GPU in another PC

If all software and connection fixes fail, test the GPU in a different PC to determine whether the fault is the GPU itself or your original PC is motherboard, power supply, or BIOS. A GPU that works in a second PC points to a motherboard or BIOS issue in the original system. A GPU that fails in both PCs is physically damaged and needs replacement or warranty claim.

FAQ

How do I know if my graphics card is detected?

Open techtester.online/gpu tester/ in Chrome or Edge. Your GPU name and vendor appear automatically at the top of the page. If it shows your dedicated GPU (e.g. NVIDIA RTX or AMD Radeon), it is detected and working. If it shows only Intel UHD or AMD Radeon integrated, your dedicated GPU is not being used.