NVIDIA is the graphics card manufacturer. To check whether the PC has an NVIDIA display adapter:
- In the search box on the taskbar, type Device Manager.
- Open Device Manager.
- Expand Display adapters.
- Look for the manufacturer and adapter name. If the PC uses NVIDIA, it will show there.
To help get the extended monitor working:
- Press Windows logo key + P and make sure Extend is selected.
- Disconnect accessories such as docks, dongles, and adapters, then reconnect the monitor directly if possible.
- Check that the monitor cable is secure.
- Try a different cable.
- If the PC has more than one video output port, try a different port.
- If the setup worked before and stopped, press Windows logo key + Ctrl + Shift + B to reset the graphics driver.
- Restart the PC.
- If needed, reinstall the display driver:
- Open Device Manager
- Expand Display adapters
- Right-click the display adapter
- Select Uninstall device and Attempt to remove the driver for this device
- Restart if prompted
- Open Device Manager again
- Right-click the display adapter
- Select Update driver > Search automatically for updated driver software
Also make sure Windows is up to date by using Check for updates.
References: