USB-C to HDMI adapter plugged in but no picture on the monitor
USB-C to HDMI adapters don't work because the computer's USB-C port doesn't support video output, or the computer is sending video to a different display by default. Unplug the adapter, wait 5 seconds, and plug it back in — this makes the computer re-detect the monitor. If the screen stays black, try forcing the computer to use the external display in your display settings.
Your USB-C to HDMI adapter is a bridge between your computer's port and your monitor's cable. The monitor stays dark when the adapter isn't getting the right signal from the computer, or the computer doesn't know the monitor is there. The problem is almost always that the computer is set to use a different display, the adapter isn't fully recognized, or the USB-C port doesn't support video on your computer.
Fix-IT-Bot will walk you through each step — just tap, no typing needed.
Skip — I just want a technicianCommon mistakes to avoid
- Not pushing the adapter or cable in far enough — they need to click completely
- Trying a different adapter before checking if the first one was fully plugged in
- Assuming the adapter is broken when really the monitor is set to the wrong input
Signs you need professional help
- Cables are fully plugged in, monitor is on the right input, and you've restarted the computer but still no picture
- The monitor worked once but now won't display anything even after being unplugged
- You're getting a picture on the monitor but it's constantly flickering or cutting out
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