How to Connect Your PC to a TV in 4 Steps

The fastest way: HDMI cable

An HDMI cable is the simplest connection method. Plug one end into the HDMI port on your PC and the other into any HDMI port on your TV. Your TV should detect the signal automatically. If it doesn't, use your TV remote to select the correct HDMI input — usually labeled HDMI 1, HDMI 2, or HDMI 3 depending on which port you used.

Most modern PCs and all TVs made in the last ten years have HDMI ports. If your PC is older or uses a different port type, you may need an adapter. Check what ports your specific PC has before buying a cable.

HDMI carries both video and sound, so you won't need a separate audio cable. The connection is plug-and-play — no software to install or settings to adjust.

Key Takeaways

HDMI is the easiest method: plug the cable into both devices and select the correct input on your TV.
If your PC has a different port type (USB-C, DisplayPort, or VGA), you will need an adapter that matches your specific PC model.
Wireless connections like Miracast and Chromecast work without cables but require both devices to support the same standard.
Once connected, you can extend your display to use the TV as a second monitor or mirror your PC screen.
Audio may come through your TV speakers or your PC speakers depending on your settings — check the sound output in Windows or macOS.

Wireless options: Miracast and Chromecast

If you want to avoid cables, Miracast is built into Windows 10 and Windows 11. On your PC, open Settings, go to System, then Display, and select "Connect to a wireless display." Your TV must support Miracast — most Samsung, LG, and Sony TVs made after 2015 do. The connection takes about 10 seconds once your TV appears in the list.

Miracast works best when your PC and TV are on the same Wi-Fi network and within 20 feet of each other. The connection is direct between the two devices and does not use your internet speed, so lag is usually minimal.

Chromecast is Google's wireless standard. If your TV has a built-in Chromecast (many newer models do), you can cast from your PC using the Google Cast extension in Chrome. Open the extension, select your TV, and your screen appears on the TV within seconds. This method works on any PC with Chrome installed, including Windows, Mac, and Linux.

Chromecast requires a strong Wi-Fi connection and works best for streaming video or displaying web pages. It is less reliable for gaming or fast-moving graphics than HDMI or Miracast.

Older PCs: adapters for VGA, DisplayPort, and USB-C

If your PC has a VGA port (a blue connector with three rows of small holes), you need a VGA-to-HDMI adapter. VGA carries video only, so you will also need a separate 3.5mm audio cable from your PC's headphone jack to your TV's audio input. VGA adapters cost $10 to $20 and are widely available.

A PC with a DisplayPort (a small rectangular port, often on laptops) can use a DisplayPort-to-HDMI adapter. These are more expensive than VGA adapters — usually $15 to $40 — but carry both video and audio. Check your PC's manual to confirm which port type you have.

USB-C ports on newer laptops can output video directly. You need a USB-C-to-HDMI adapter or a USB-C dock with HDMI output. These range from $20 to $80 depending on the brand and whether the dock includes other ports like USB or Ethernet.

Extending your display versus mirroring

Once your PC is connected to your TV, Windows and macOS give you two options. Mirroring shows the same image on both screens — useful for presentations or watching video with someone else in the room. Extending treats the TV as a second monitor, so you can drag windows between them and use the extra screen space for work.

To change the mode in Windows 10 or 11, press Windows key + P and select "Duplicate" for mirroring or "Extend" for a second monitor. On a Mac, open System Preferences, go to Displays, and click "Arrangement" to choose how the screens work together.

Extending is useful if you want to watch a video on the TV while working on your PC, or if you need more screen space for spreadsheets or design work. Mirroring is simpler for presentations because everything you do on your PC appears on the TV automatically.

Fixing sound when the TV is connected

By default, Windows sends sound to your TV speakers once you connect via HDMI. If you want sound to come from your PC speakers instead, right-click the volume icon in your system tray, select "Open Volume mixer," and change the default playback device back to your PC speakers or headphones.

On a Mac, open System Preferences, go to Sound, and select the output device you want — your TV will appear in the list as "HDMI" or by your TV's name. You can switch between them anytime without unplugging the cable.

If you hear no sound at all, check that your TV is not muted and that the volume is turned up. Then verify in your PC's sound settings that the TV is selected as the output device. Some TVs also have a separate audio input setting — check your TV remote or manual if sound still does not work.

Resolution and refresh rate settings

Your PC may automatically adjust its resolution to match your TV, but sometimes it defaults to a lower resolution that looks blurry. In Windows, right-click the desktop, select "Display settings," scroll down to "Resolution," and choose the highest option available. On a Mac, open System Preferences, go to Displays, and select "Scaled" to see resolution options.

Most TVs display at 1920 × 1080 (Full HD) or 3840 × 2160 (4K). If your PC supports a higher resolution than your TV, Windows and macOS will automatically use the TV's maximum resolution. You do not need to change anything unless the image looks wrong.

Refresh rate — how many times per second the image updates — matters mainly for gaming. Most TVs refresh at 60 Hz, which is fine for everyday use and video. If you play fast-paced games, check your TV's manual to see if it supports 120 Hz, and then enable it in your graphics card settings.

Troubleshooting a connection that won't work

If your TV does not detect the HDMI signal, try these steps in order: unplug the HDMI cable from both ends and plug it back in, restart your PC, and restart your TV. Then check that you selected the correct HDMI input on your TV — use your remote to cycle through the inputs until you see your PC's desktop.

If the cable is plugged in but your TV still shows "No Signal," the HDMI port on your PC or TV may be damaged. Try a different HDMI port on your TV if it has more than one. If that does not work, try a different HDMI cable — some cables fail without warning.

For wireless connections, make sure both your PC and TV are on the same Wi-Fi network. Restart your Wi-Fi router, then restart both devices. If Miracast still will not connect, check that your TV's Miracast feature is turned on — the setting is usually in the TV's network or display menu.

Frequently Asked Questions

Do I need a special HDMI cable for 4K video?

Standard HDMI cables work for 4K, but older cables may not support the full bandwidth. If you are buying a new cable, choose one labeled "High Speed HDMI" or "HDMI 2.0" to may support it handles 4K at 60 Hz. Most cables sold today meet this standard, and they cost the same as older ones.

Can I use my TV as a monitor for gaming?

Yes, but TVs have higher input lag than monitors — usually 30 to 50 milliseconds of delay between your keyboard and what appears on screen. For casual gaming this is fine. For competitive games where timing matters, a monitor is better. Use HDMI for the best performance, and check your TV's settings for a "Game Mode" that reduces lag.

What if my PC and TV are in different rooms?

HDMI cables work up to about 50 feet with a standard cable, or up to 100 feet with an active HDMI cable that has a built-in amplifier. For longer distances, wireless options like Miracast or Chromecast are more practical, though they require a strong Wi-Fi signal throughout your home.

Will connecting my PC to my TV slow it down?

No. The connection itself does not affect your PC's performance. If your PC feels slower, it may be because extending to a second display uses a small amount of graphics power, but this is rarely noticeable unless you are running demanding games or video editing software.

Can I connect multiple PCs to the same TV?

Yes. You can plug different HDMI cables into different HDMI ports and switch between them using your TV remote. For wireless connections, you can only connect one device at a time — you will need to disconnect one PC before connecting another.

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.