Second monitor not being detected by your computer
The monitor probably isn't detected because of a loose cable, wrong cable type, or a driver issue. Check that the cable is plugged in firmly on both ends, give Windows 30 seconds and move the mouse. If it's still dark, restart your computer with both monitors plugged in. If it still doesn't work, update your graphics driver.
When a second monitor doesn't show up, it's a cable problem or Windows not recognizing the monitor at startup. The fix is simple: check that the cable is plugged in firmly, restart your computer, and wait for Windows to detect it. If that doesn't work, your graphics driver can't be up to date. Updating it fixes the problem. In rare cases, the cable or port is broken and you'll need a new cable or to try a different port.
- ✓Have both monitors connected to power and to the computer
- ✓Know what type of cable connects your second monitor (HDMI, DisplayPort, USB-C)
- ✓Note whether the second monitor has ever worked on this computer before
Fix-IT-Bot will walk you through each step, just tap, no typing needed.
Skip, I just want a technicianCommon mistakes to avoid
- Using a VGA or DVI cable when the monitor needs HDMI or DisplayPort. Older cables don't work with newer monitors; try a different cable type.
- Not waiting long enough for Windows to detect the monitor. Give it 30 seconds after restarting before assuming it's broken.
- Not checking if the cable is actually plugged into the graphics card port instead of a USB or audio port by accident. Look for the right connector.
Signs you need professional help
- If you've tried all these steps and it still doesn't work, give us a call and we'll sort it out.
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