Using a monitor or TV as a second screen of a notebook is an option that can be very useful in the day to day of the users. So if you need to open many tabs or perform more than one task simultaneously, you have the possibility to organize your desktop better. However, the monitor may not work properly if the setting is not performed properly or if there is a problem with the equipment.
Ten eighth-generation Intel notebook models
To help you use the second screen in the best way, TechTudo listed has lowered some possible reasons if the screen is not recognized on the notebook or PC. Still, it is worth mentioning that if the problem persists, it is most advisable to seek technical assistance from your device.
Two matches of the 2018 World Cup being shown at the same time from two monitors
Is the HDMI or VGA / DVI cable working?
If the monitor is not being recognized by the notebook, the first step is to check if the cable being used to make the connection between the devices is working. Because these products are often fragile, over time, they often have defects or poor contact.
Knowing this, it is valid to use another cable to make the connection or even test it on another device. Thus, the user will be sure that the problem is not in the HDMI or VGA / DVI cable.
Check that the cable is running properly
Are the device inputs failing?
Another possibility is the problem being in the input of the notebook or monitor. It is important that the user is always cleaning the device door so that it is not defective during use. In addition, it is also common for pieces of cables and connections to break into the inputs, resulting in a malfunction.
So it's worth testing the notebook and monitor inputs with other devices and cables to make sure the problem is not in the input ports of your devices.
Dirty inputs can cause the connected devices to malfunction
Is the configuration in the notebook correct?
After connecting the cable and monitor to the notebook, it is important to set up the device correctly. Otherwise, the second screen will be black: the device is connected but not in use. To resolve this problem, it is enough for the user to do the following:
Step 1. Right-click on the screen and select the "Display Settings" option;
Step 2. Next, define how to use the second screen, depending on how you plan to use it - the most common option is to "Extend these videos".
Choose how you plan to use the second screen
Does the monitor screen work on other devices?
As a final test, if none of the above options work, you should test the monitor on another computer or device. If it still does not generate an image, it is possible that the problem is not in the notebook, but in the monitor you want to use as a second screen.
If you really come to this conclusion, first make sure that it is connecting normally. If it is and will not work, the problem is likely to be on the display - the device turns on but the screen remains black. For this, it will be necessary to arrange the repair of the display with a professional in the area.
Call for service
Finally, if none of the solutions above solve the problem of your connection, the ideal is to perform a more complete diagnosis on your device. For this, the most recommended is to look for the support team of your notebook or PC.