Having trouble with an external monitor or display connection? These guides help you work out whether the problem is with Windows, the monitor, HDMI, USB-C, a cable, adapter, hub or docking station.
Start with the guide that most closely matches what you can see. You can also find help checking whether a USB-C port supports a monitor, using one USB-C connection for display and charging, and deciding whether you need a hub or docking station.
Is your external monitor blurry in Windows 11, stretched, or using the wrong resolution? Start with the display settings before changing drivers or replacing hardware. The most useful first question is what actually looks wrong. A genuinely blurry picture, text that is simply too small, and a missing display resolution are related problems, but they … Read more
External monitor flickering or cutting out does not necessarily mean the monitor is failing. The problem can come from the display cable, a dock or adapter, the connection between the computer and monitor, Windows display settings or the graphics driver. The most useful approach is to change one thing at a time so you can … Read more
USB-C to HDMI adapter not working? The monitor or TV may show No Signal, stay blank or fail to appear in Windows. That does not automatically mean the adapter is faulty. The problem could be the USB-C port, the HDMI cable, the display input, the adapter itself or the way Windows is using the external … Read more
Yes, USB-C can charge a laptop and run a monitor at the same time. With the right laptop, monitor and cable, one USB-C connection can carry the picture to the monitor while the monitor sends charging power back to the laptop. The important part is that USB-C ports and cables do not all support the … Read more
An HDMI no signal message can be confusing when the cable is clearly plugged into both the computer and monitor. The connection may look correct, but that does not prove that a usable video signal is reaching the display. The most useful approach is to follow the HDMI connection from the computer to the monitor … Read more
If you’re comparing a USB-C hub vs docking station, the right choice depends less on the label and more on what you actually need to connect. The confusing part is deciding which one you actually need. The terms USB-C hub and docking station overlap, and two products with similar-looking connections can have very different capabilities. … Read more
If your monitor says No Signal, the monitor has power but is not currently receiving a usable picture through the connection it is trying to use. That does not automatically mean the monitor, cable or computer has failed. Start with the monitor input and physical connection, then work through the signal path one part at … Read more
If your laptop won’t detect a second monitor, the best place to start is by checking whether Windows can see the display at all. A monitor that is completely missing from Windows Display settings is a different problem from one that Windows recognises but which stays blank or shows No Signal. The checks below will … Read more
Does my laptop USB-C port support a monitor? Seeing a USB-C port on your laptop does not automatically mean you can use it to connect an external display. USB-C ports can support different combinations of data, charging and video. The important question is not simply whether your laptop has USB-C, but what that particular USB-C … Read more
If your USB-C monitor charges your laptop but shows no picture, the connection is only partly telling you what is happening. Power is reaching the laptop, but that does not confirm that a working video signal is reaching the monitor. Start with the monitor input, cable and USB-C ports before changing Windows settings or assuming … Read more