When the projector only shows the desktop background and does not show the icons or open content on the desktop, it is usually because the computer is set to extended mode.
First of all,Extended modeis a mode that allows a computer to use two monitors, one of which is the computer's own screen and the other is an external display device, such as a projector. In this mode, you can drag different apps or windows to different screens. For example, you can edit documents on your laptop's screen while presenting slides on a projector.
Secondly, if you want the projector to display exactly the same content as your computer screen, you should choose itReplication mode。This way, no matter what you open on your computer, the projector will display the same content in sync.
Also, if you want to switch to copy mode, you can do so by following these steps:
1.Check the cable: Make sure that the cable between your computer and the projector (such as an HDMI cable) is properly connected.
2.Adjust the display settings: In Windows, you can quickly bring up the projection settings options by pressing the Win+P keys. In the menu that pops up, select the "Copy" option.
3.Go to System Settings: You can also go to your computer's System Settings, find Display Settings, and select "Duplicate these displays" in the multi-monitor settings.
4.Save your changes: When you're set up, you might be asked if you want to keep your changes, and select Keep changes to make your settings take effect. Overall, with the steps above, you should be able to fix the problem that your projector only shows the desktop background and make sure that your projector is able to display the contents of your computer screen properly. If the problem persists, you may need to check your hardware further or contact technical support for help.