Likely fix
Fix: Monitor says no signal
A monitor says no signal when it is powered on but not receiving video from the computer, console, dock, or adapter.
Quick answer
Check that the monitor is on the correct input source, reconnect the cable at both ends, wake the computer, then try another cable or port.
Important warning
Many no signal problems are caused by the monitor being set to the wrong input, especially when it has multiple HDMI ports.
Try this
- 1 Make sure the monitor is powered on.
- 2 Press the monitor input/source button and choose the correct input, such as HDMI 1, HDMI 2, DisplayPort, or USB-C.
- 3 Unplug and reconnect the video cable at both ends.
- 4 Wake the computer and make sure it is not asleep.
- 5 Restart the computer while the monitor is connected.
- 6 Try another video cable if available.
- 7 Try another port on the computer or monitor.
- 8 If using an adapter, confirm it works in the direction you need.
Common causes
Monitor is on the wrong input source.
Video cable is loose or damaged.
Computer is asleep or not outputting video.
Adapter is the wrong direction.
Cable is plugged into the motherboard instead of the graphics card.
Dock or hub does not support video output.
What to check next
- Check the monitor input/source setting.
- Check whether the cable is fully seated at both ends.
- Check whether the computer works with another monitor or TV.
- Check whether the monitor works with another computer or console.
- Check whether the video cable is connected to the graphics card ports, not the motherboard ports.
This might need a cable or adapter
If this fix points to a cable issue, check the related cable guide before buying the wrong one.
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