Lenovo L421 laptop switching projector

Dear users, hello!

You can try pressing fn+f3 first. Or open the control panel, select "Display", and select "Connect to Projector" on the left side to choose according to your requirements.

The steps are as follows: 1. Connect the laptop and projector.

2. Press the FN+(F1-F12) button on the notebook (the shortcut key for switching to the projector is different for different notebooks), an operation box will pop up, and in the pop-up operation box, select "Computer Only".

3. Select "Copy", it will be displayed exactly the same on the computer screen and the projector screen.

4. Select "Extended", you can adjust the resolution, that is, you can adjust the computer resolution, you can also adjust the screen resolution.

5. Select "Screen Only", it will only be displayed on the screen, not on the computer.

1. Connect the projector to the notebook, right-click on the desktop, select [Screen Resolution], select [Advanced Settings] and then select [Intel Core Graphics Control Panel].

<>2. Click [Graphic Properties] and select [Display].

<>3. Click [Multi-screen Display] in the menu bar.

4. There are 3 options on the left, choose [Clone], [Copy] or [Expand] and other switching methods.

5. Press the [FN+F3 key] on the notebook, many computers are FN+F3 keys, and you can switch at will.

The projector is a built-in feature of the laptop, and we can switch the projector through the console of the graphics card.

1. Connect the external screen (projector) to the notebook, right-click the desktop to select the screen resolution, and select advanced settings. Select the Intel Core Graphics Control Panel.

<>2. Click [Graphic Properties] and select [Display].

3. Click the multi-screen display in the drop-down menu.

4. On the left side, you can choose cloning (replication) or expansion and other switching methods. The above is how to set it up.

5. Simple method. Check whether each power supply is connected, press the FN+F3 key on the notebook, and an operation box will pop up. Most computers use the FN + F3 keys. You can switch between them at will.

1. Since today's computers are generally equipped with HDMI interfaces, if you connect to a projector, you generally need an adapter.

2. After getting the adapter, connect one end to the projector and the other end to the computer.

3. Now start the projector first and wait for the projector to start successfully.

4. Turn on the computer, if it can be successfully started, the projector will be directly connected to the computer.

5. If the device is successfully connected, the screen of the notebook and the projector will become synchronized, and it can be used normally.

It's a pleasure to serve you.

Laptops have VGA interfaces, just connect to the VGA interface of the projector. But when buying VGA cables, you should be optimistic about whether it is for needles, holes, or holes. If you don't understand, when you buy a VGA cable, you can first look at the interface between the graphics card and the projector.

If it is 15 holes, choose the needle; If it is 15 needles, choose the hole.

If your laptop and projector have HDMI ports, just sell an HDMI cable.