The notebook is connected to the projector without display, and I am anxious to ask for help from th

There are buttons on the notebook, and a button is added to fn on a disc to switch the display. Don't know which key your notebook is. Take a look at the manual.

Different notebooks have different function combinations to switch to the projector,Generally FN+F3 or FN+F5 or FN+F8,See which F function key has the CRT LCD mark which key。

Mine is Lenovo Zhaoyang E660P, after normal startup, press FN+F3, you can switch directly, there should be no problem.

Inspection method: 1. Replace the connecting wire and eliminate the possibility of wire failure.

2. Replace the notebook or projector to eliminate the possibility of the projector or notebook failure.

3. There is no problem with the equipment, that is, the settings are not debugged. Use the key combination "FN + Projection Key" (the projection key is generally on F4) to switch the screen display mode. Among the four ways that appear, "Disconnect the projector" will cause the laptop to disconnect from the projector, remove this selection, and the screen can be displayed.

We all know that Windows computer screen projection can use the system's built-in functions, and today I will introduce you to another method, with the help of a third-party software tool, Airdroid Cast.

Install the Airdroid Cast software on [PC 1] and [PC 2].

If the two computers are connected to the same network, you can directly use the screen mirroring function. If the two computers are far away from each other, or connected to different networks, it will be judged as remote screen mirroring.

Operation steps: Open the Airdroid Cast on [Computer 2] and click [Wireless], which contains a string of 9-digit projection codes.

Open Airdroid Cast on [Computer 1], click [Cast], and fill in the 9-digit projection code to the corresponding position.

After both computers allow the projection request in turn, the screen of computer 1 will be displayed on computer 2.

If you don't want to install the software and want to realize the projection of the computer screen to the computer, in fact, AirDroid Cast also has a web version, as long as you open the web version of Airdroid Cast in Chrome or Edge browser, you can cast the screen.

Use a projector.

When we can <> the laptop

Then we can turn on the right button to turn on the screen resolution.

option, here we click on "Connect to projector".

<> then, we have opened the relevant settings options. It is important for us to note that we can use shortcut keys.

To do so, press the Microsoft logo key.

and the P key, you can quickly turn on the relevant settings displayed by the projector.

If we select "Computer Only" it means that the image will not be displayed on the projector and the computer will not output the image to the projector; If we select "Projector Only", then the computer will turn off the image output on its own monitor, which in some cases will help save energy. As for copying, the resolution display output on the projector and computer is exactly the same; There is also an extension function, we can put the image output on one monitor to two monitors, and we can also adjust the resolution of these two different monitors differently, which needs to be adjusted by ourselves according to actual needs.

The screen does not display after the laptop projector is connected to the computer, which may be caused by the following 5 reasons.

1. It may be due to the following reasons, there is no switching signal on the computer side, and the laptop is connected to the computer, and the signal needs to be switched. The operation key is the FN + dual monitor key, and this dual monitor key may be the F3, F4, or F7 symbol on the keyboard.

2. It may be due to the high resolution of your notebook, you can find the resolution option in the [Display] option and adjust it to 1024*768, because most of the poor shadow machines are at this resolution.

3. Is the refresh rate set too high, the general refresh rate is set to 60Hz.

5. You can also right-click on the blank space of the computer desktop, then select [Properties], then select [Settings], and then deselect [Extend Windows Desktop to Monitor]. <

The screen is not displayed after the projector is connected to the computer,First of all, you need to check whether the access cable of the projector is firm,Turn on the computer after checking,Press the FN plus F8 and WIN plus P shortcut keys at the same time,Switch the computer screen to the projector。 If it still doesn't work, it is recommended to open the Master Lu detection graphics card, reinstall the computer and then connect it.

1. When the projector is connected to the computer and does not display the picture, first check whether the access cable carried by the projector is firm, if the access cable is loose and not plugged in, just plug it back in.

2. If the access cable of the projector has been plugged in, you can turn on the computer to enter the desktop first, and press the FN plus F8 and WIN plus P shortcut keys at the same time to switch to the projector interface.

3. If the projector still can't display the picture normally, it is recommended to install Master Lu software on the computer**, and then open Master Lu to detect the graphics card, if the graphics card is abnormal, you need to reinstall the graphics card and then connect the projector.

Brand model:DangbeiX3、Thinkpadx1

System version:Dangbei。

After the projector is connected to the laptop, the screen is not displayed, it may be that the projection mode on the computer is selected incorrectly, you can open the projection settings through the windowsp key to change, it may be that the projection signal source is selected incorrectly, you can open the system settings, change it in the signal source settings, it may be caused by the failure of the connection line, and you can replace it with a new connection cable to solve it.

There are several reasons why the computer screen does not display when the notebook is connected to the projector, and the specific reasons and solutions are as follows:

1. It may be that the computer does not choose the correct projection mode to cause the dollar limit, you can press the Windows + P key of the computer to open the projection settings, and then choose to copy, expand and other modes for display.

2. It may be caused by not switching to the correct signal source on the projector, you can open the system settings of the projector, and then change the correct signal source in the signal source settings.

3. It may be caused by the failure or damage of the connecting cable, which can be solved by replacing the connecting cable with a new one.

4. It may be that there is a problem with the interface of the notebook or projector, if it is an interface problem, it is recommended to return to the site for repair. <>