Disconnect all peripherals (such as printers, cameras, and USB devices) to confirm none of the other devices are conflicting with the monitor.Connect another known working monitor to determine that the issue is not the graphics card.Connect the monitor to another computer to see whether the problem is with the monitor.
![hp s140u monitor not detected hp s140u monitor not detected](https://i3.ytimg.com/vi/U3VjUcgQjxM/hqdefault.jpg)
![hp s140u monitor not detected hp s140u monitor not detected](https://www.picclickimg.com/d/l400/pict/255160771018_/HP-EliteDisplay-S140u-14-in-Widescreen-LED-Portable.jpg)
If the monitor does not show up in the settings, try these steps before changing the configuration settings on Windows 10: When the desktop or laptop does not detect the second external monitor, it could be a problem with the software, but it might also be an issue with the physical connection.
#HP S140U MONITOR NOT DETECTED HOW TO#
How to fix external monitor connection issues via hardware troubleshooting How to fix external monitor connection issues via latest graphics driver.How to fix external monitor connection issues via Settings.How to fix external monitor connection issues via hardware troubleshooting.