You are viewing the article How to Connect a Computer to a TV at Tnhelearning.edu.vn you can quickly access the necessary information in the table of contents of the article below.
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This article was co-written by Luigi Oppido. Luigi Oppido is the owner and operator of Pleasure Point Computers in Santa Cruz, CA. He has over 25 years of experience in general computer repair, data recovery, antivirus and upgrade.
This article has been viewed 32,310 times.
This article shows you how to project video and audio from your computer to your TV by using an HDMI cable, DVI or VGA cable, or by wirelessly transferring data to a smart TV or data transmission device. . HDMI connections can transmit high-quality video and audio via dedicated cables. VGA is an older type of connection used only for video transmission, so you need to transfer audio from your computer to your TV by connecting an additional audio cable. Although some DVI ports on computers support audio playback, most devices do not. Refer to your computer and TV manuals to see which connection type you should use.
Steps
Using HDMI
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Connect the computer to the TV using an HDMI cable with the same ends. The HDMI ports on the computer and on the TV are the same, and the HDMI cable must also have two identical connectors.
- If the TV has multiple HDMI ports, you need to remember the serial number of the port used to connect.
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Change the input of the TV. Use the buttons on the TV or remote and press the Input button to change the TV’s input to HDMI.
- If your TV has multiple HDMI ports, select the one that is already connected to the computer.
- Some TVs will do this automatically when a signal is detected.
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Right-click your computer’s home screen and select Display Settings to open the menu.
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Click Detect . This is an operation that asks the computer to detect the TV signal that you have connected. See if you see two squares numbered 1 and 2 displayed on the settings window.
- Your computer may already recognize the TV.
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Click Identify . With this operation, you will see a label displayed on each screen to know which number is for the computer monitor and which is for the television (the number “1” is the main display screen and the number “2” is the display screen). sub slide show).
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Click the “Multiple displays” box and select the appropriate option. Here, you will see a few options for projecting from your computer to the TV as follows:
- Duplicate these displays . This is the option to show exactly what is displayed on the computer on the TV.
- Extend these displays . This is the option to display more TV screens on the computer.
- Show only on 1 (Show only on number 1). This is slide off option #2.
- Show only on 2 (Show only on number 2). This is the #1 turn off option.
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Click Apply . This will apply the display settings changes for computer monitors and televisions. Your TV is now connected to the computer.
- You can further adjust each slide by clicking the appropriate numbered square and then selecting Advanced display settings . You can also drag and rearrange the squares to change the slide orientation.
Use DVI or VGA
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Connect the computer to the TV using a DVI or VGA cable of the same end or a regular cable. The DVI and VGA ports on the computer must be the same as the TV, and the cable must also have the same two connectors.
- On some TV’s VGA inputs are marked “PC IN” or “Computer IN”.
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Connect the computer to the TV using the audio cable with the same ends. This is a 3.5mm audio cable, similar to the connector of a headset. Attach one end of the cable to the headphone connection port on your computer, which is usually the green port. The next thing is to connect the other end to the audio input on the TV.
- The audio input on the TV is usually near the DVI or VGA port you connected it to before.
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Change the input of the TV. Use the buttons on the TV or TV remote and press the Input button to change the TV’s input to DVI or VGA.
- On some televisions, this input is labeled “PC” or “Computer”.
- Some TVs will do this automatically when it detects a signal.
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Right-click your computer’s home screen and select Display Settings to open the menu.
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Click Detect . This is an operation that asks the computer to find the TV signal that you have connected. See if you see two squares numbered 1 and 2 displayed on the settings window.
- Your computer may already recognize the TV.
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Click Identify . With this, you’ll see a label displayed on each monitor that tells you which number is for the computer monitor and which is for the television.
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Click the “Multiple displays” box and select the appropriate option. Here, you will see a few options for projecting from your computer to the TV as follows:
- Duplicate these displays . This is the option to show exactly what is displayed on the computer on the TV.
- Extend these displays . This is the option to display more TV screens on the computer.
- Show only on 1 (Show only on number 1). This is slide off option #2.
- Show only on 2 (Show only on number 2). This is the #1 turn off option.
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Click Apply . This will apply the display settings changes for computer monitors and televisions. Your TV is now connected to the computer.
- You can further adjust each slide by clicking the appropriate numbered square and then selecting Advanced display settings . You can also drag and rearrange the squares to change the slide orientation.
Using Wi-Fi
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Turn on Wi-Fi on the TV. Follow the manufacturer’s instructions, access the Miracast transmission protocol to establish the TV’s Wi-Fi connection.
- Not all TVs with Wi-Fi support this feature. Check your TV’s manual before proceeding.
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Connect the TV to the Wi-Fi network. This must be the Wi-Fi network used on the computer.
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Right-click on the computer screen and select Display settings .
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Click the “Multiple displays” box and select Duplicate this display .
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Select Apply .
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Open Start 
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then click
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(Settings) to open the main Windows settings menu.
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Click Devices and then select Connected Devices .
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Click Add a device . Windows will start searching for connected devices on the network.
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Select your TV when it is displayed. Windows will automatically connect to the TV.
Troubleshoot
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Make sure you have the right cable or adapter. Sometimes the cable has a suitable connection but is not used for the purpose of transmitting audio or video signals. So make sure the cable is dedicated to audio/visual.
- Most computers do not transmit audio through the DVI port, so a DVI to HDMI converter will not transmit audio in most cases. Therefore, you will need to attach a separate audio cable.
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Make sure all cables are properly connected. You need to check that the cables are properly attached to the port and are not loose. If the cable has fixing screws, such as for most DVI and VGA cables, make sure the screws are tightened.
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Check the volume. You need to make sure that the volume is turned on on the computer, TV and is not set to silent mode.
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Change the audio output. If you do not hear sound, make sure you have selected the appropriate audio output.
- Right click
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- Click Playback devices .
- Select the appropriate audio output (HDMI output for HDMI connections, or headphones if you are using an audio cable).
- If you don’t see the right output, right-click any device that’s showing and make sure Show Disabled Devices and Show Disconnected Devices are selected. concatenation) has been selected. This will let you know the audio has been disconnected or disabled.
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Restart the computer and TV. When all else fails, restarting the computer and the TV can help the computer detect the newly connected slideshow.
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Check your computer’s projection calibration. Sometimes, you will receive an error message “HDMI not supported” (HDMI connection is not supported) when the TV and computer have different projection settings in terms of resolution.
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This article was co-written by Luigi Oppido. Luigi Oppido is the owner and operator of Pleasure Point Computers in Santa Cruz, CA. He has over 25 years of experience in general computer repair, data recovery, antivirus and upgrade.
This article has been viewed 32,310 times.
This article shows you how to project video and audio from your computer to your TV using an HDMI cable, DVI or VGA cable, or by wirelessly transferring data to a smart TV or data transmission device. . HDMI connections can transmit high-quality video and audio via dedicated cables. VGA is an older type of connection used only for video transmission, so you need to transfer audio from your computer to your TV by connecting an additional audio cable. Although some DVI ports on computers support audio playback, most devices do not. Refer to your computer and TV manuals to see which connection type you should use.
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