Why does my graphics card show no display?

There are a number of potential reasons why a graphics card might not be displaying anything on your monitor.

1. Loose connection: The first thing to check is that the connection between the graphics card and the monitor is secure. Ensure that the cables are firmly connected on both ends. Try swapping out the cables with a known working set if possible.

2. Incorrect video settings: Sometimes the settings on the video card or monitor may need to be adjusted in order for proper display. Check the settings on the video card’s control panel, and make sure they match those on the monitor.

3. Outdated drivers: If the graphics card has been installed recently, then it’s possible that its drivers are not up to date. Download the latest driver version from the manufacturer’s website and install it.

4. Overheating: Graphics cards can overheat when they are not properly cooled. Make sure that all of the fans, heatsinks and other components of the cooling system are working properly. Clean out any dust or debris that may have built up in the case.

5. Faulty hardware: If all of the previous steps don’t work, then it’s possible that the graphics card itself is faulty. Try swapping it out for another card to see if the issue persists.

Overall, the most common reason for a graphics card not displaying anything is usually a loose or incorrect connection. If this doesn’t solve the issue, then it could be due to outdated drivers, overheating, or even a faulty piece of hardware.