How to Connect Your PC to Your TV

The simplest connection depends on what ports your TV and computer both have

Most modern TVs and computers connect through HDMI, a single cable that carries both picture and sound. If both your TV and PC have an HDMI port, that is your fastest route — plug the cable in, switch your TV to the right input, and you are done. If one or both devices lack HDMI, you have wireless options or older cable types that still work, though they may require extra steps or adapters.

Before you buy anything, check what ports are actually on your devices. Look at the back and sides of your TV for ports labeled HDMI, USB-C, or DisplayPort. On your PC, check the back of the tower or the sides of a laptop. Knowing what you have takes two minutes and saves you from buying the wrong cable.

Key Takeaways

HDMI is the standard connection for most PCs and TVs made in the last ten years and requires only one cable for picture and sound.
If your PC or TV lacks HDMI, USB-C and DisplayPort are newer alternatives that work on many recent devices.
Wireless connections like Miracast, AirPlay, or Chromecast work without cables but may have slight delays and depend on a stable Wi-Fi network.
Older connection types like VGA or DVI still work but require separate audio cables and adapters, making them slower to set up.
Once connected, you may need to change your TV's input source and adjust your PC's display settings to use the TV as a second screen or mirror.

HDMI: the standard wired connection

HDMI cables are cheap, reliable, and carry both video and audio in one connection. Most TVs have at least two HDMI ports, usually on the back or side. Most desktop PCs have one HDMI port on the back of the tower. Laptops vary — some have HDMI, some do not.

To connect: plug one end of the HDMI cable into your PC and the other into any HDMI port on your TV. Pick up the TV remote and press the Input or Source button. Scroll through the list of inputs until you see the HDMI port number you used — it will say something like "HDMI 1" or "HDMI 2" — and select it. Your PC screen should appear on the TV within a few seconds.

If nothing appears, go to your PC's display settings. On Windows, right-click the desktop and select "Display settings." On Mac, go to System Settings, then Displays. Both will show you whether the TV is detected. If it is listed but not showing an image, try unplugging the HDMI cable, waiting ten seconds, and plugging it back in.

USB-C and DisplayPort for newer devices

Many newer laptops, especially thin models, use USB-C or DisplayPort instead of HDMI. Some newer TVs also have USB-C ports. If your TV has USB-C, you can often use a USB-C to USB-C cable directly. If your TV does not, you will need an adapter — USB-C to HDMI or DisplayPort to HDMI — which costs between $15 and $40.

The connection process is the same as HDMI: plug in the cable or adapter, switch your TV to the correct input, and adjust your PC's display settings if needed. USB-C has one advantage: on some laptops, it can also charge your device while you are connected, though this depends on your specific model.

DisplayPort is less common on TVs than HDMI or USB-C, but if your PC has it and your TV does not, a DisplayPort to HDMI adapter works the same way. Check your TV's manual or the ports on the back to see which type you have.

Wireless connections without cables

If running a cable is not practical, you can mirror or extend your screen wirelessly. The method depends on your devices. Miracast works on most Windows PCs and many newer TVs — no setup needed beyond turning it on. On Windows, press the Windows key and P together, select "Connect to a wireless display," and choose your TV from the list. Your PC will prompt you to confirm the connection on the TV.

If your TV does not support Miracast, you can use a Chromecast device (a small box that plugs into your TV's HDMI port) or a Roku streaming device. Both let you cast your screen from your PC through your home Wi-Fi network. Setup takes a few minutes — you plug the device in, connect it to your Wi-Fi, and then use your PC to send video to it.

Apple devices use AirPlay, which works between Macs and Apple TVs or AirPlay-compatible smart TVs. On a Mac, click the Control Center, select Screen Mirroring, and choose your TV. Wireless connections are convenient but depend on a stable Wi-Fi network. If your Wi-Fi is slow or drops, the picture may lag or disconnect.

Older connection types: VGA, DVI, and component video

If your TV or PC is more than ten years old, it may have VGA, DVI, or component video ports instead of HDMI. These still work, but they require more steps. VGA and DVI carry only video, so you will need a separate audio cable — usually a 3.5mm jack (headphone-sized) — running from your PC to the TV or to speakers.

To use these older connections, plug the video cable into both devices, then plug the audio cable into your PC's headphone jack and into the TV's audio input or into external speakers. Switch your TV to the correct input and adjust your PC's display settings. The picture quality is lower than HDMI, especially on large screens, but it works if that is what you have.

If you have an older PC with VGA and a newer TV with only HDMI, you can buy a VGA to HDMI adapter for $20 to $50. Plug the VGA cable into the adapter, then plug the adapter into the TV's HDMI port. You will still need a separate audio cable.

Adjusting your display settings after connecting

Once your TV is connected and showing an image, you have two main options: mirror your screen or extend it. Mirroring shows the same thing on both your PC monitor and your TV — useful for presentations or watching something together. Extending uses your TV as a second screen, so you can drag windows between them — useful for working with more space.

On Windows, open Display settings (right-click the desktop and select "Display settings"). Scroll down to "Multiple displays" and choose "Extend these displays" or "Duplicate these displays." On Mac, go to System Settings, then Displays, and select the arrangement you want.

You can also adjust the resolution and refresh rate in the same settings. If the picture looks blurry or stretched, try lowering the resolution or changing the aspect ratio. Most TVs work best at 1080p or 4K resolution, depending on what your PC can output.

Troubleshooting when the connection does not work

If you plug everything in and nothing appears on the TV, start with the basics. Make sure the TV is on and set to the correct input — this is the most common reason for a blank screen. Check that the cable is fully plugged in on both ends. Try a different HDMI port on the TV if you have one.

If the TV still does not detect the PC, restart both devices. Unplug the TV for ten seconds, plug it back in, and turn it on. Restart your PC. Then reconnect the cable. This clears temporary glitches that prevent the devices from recognizing each other.

If you are using a wireless connection and it keeps dropping, move your PC closer to the TV or router, or switch to a wired HDMI connection. Wireless connections are convenient but less stable than cables, especially if your Wi-Fi is crowded or weak.

If the picture appears but the sound does not, check your TV's audio settings. Some TVs default to internal speakers even when connected to a PC. Press the Menu button on your TV remote, look for Audio or Sound settings, and make sure the input source is set to the HDMI port you are using. If you are using an older connection type like VGA, make sure the audio cable is plugged in and your PC's volume is not muted.

Frequently Asked Questions

Can I use any HDMI cable, or do I need a special one?

Any standard HDMI cable works. You do not need expensive "premium" cables — a $5 cable from a hardware store works as well as a $50 one. The only exception is if you are using a very long cable (over 25 feet), in which case an active HDMI cable with a built-in amplifier may help, but this is rare for home setups.

What if my PC has no video ports at all?

Some very thin laptops have no video ports and rely only on USB-C or Thunderbolt. You will need a USB-C to HDMI adapter or docking station. These cost $20 to $100 depending on the brand and whether they include other ports. Check your laptop's manual to see which type of adapter it needs.

Can I use my TV as my main monitor instead of a separate one?

Yes, but TVs are not ideal for this. They have lower pixel density than monitors, so text looks blurry at normal distances. If you sit close to the screen, you will notice the fuzziness. TVs work better as a second screen or for watching video than for everyday computer work.

Why is my picture stretched or cut off at the edges?

This is usually an overscan issue. Your TV is cutting off the edges of your PC's display. Go to your TV's picture settings (usually under Menu) and look for an option called Overscan, Zoom, or Picture Size. Set it to "Just Fit" or "1:1" to show the full picture. If that does not work, adjust the resolution in your PC's display settings.

Does connecting my PC to my TV slow down my computer?

No. The connection itself does not affect your PC's speed. However, if you are using wireless mirroring and your Wi-Fi is slow, you may notice lag when moving the mouse or scrolling. Wired connections like HDMI have no impact on performance.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.