The simplest way: use an HDMI cable

The fastest way to connect a PC to a TV is an HDMI cable — a single cord that carries both picture and sound. Plug one end into the HDMI port on the back or side of your PC, plug the other end into any HDMI port on your TV, and your screen appears on the television. Most PCs made in the last ten years have at least one HDMI port. Most TVs have two or more.

Once the cable is connected, your TV may show the picture when ready. If it doesn't, pick up your TV remote and press the input or source button — usually near the top. Scroll through the list until you see "HDMI 1", "HDMI 2", or whichever port you plugged into, then press enter. Your PC screen should appear.

If you're using Windows, you can also press the Windows key and the letter P at the same time to open display options. Choose "Extend" to use both screens at once, or "Duplicate" to show the same thing on both. On a Mac, go to System Settings, then Displays, and click "Detect Displays" if your TV doesn't show up automatically.

Key Takeaways

  • HDMI is the standard connection — one cable carries picture and sound from your PC to your TV.
  • If your TV doesn't show the picture, use your TV remote to switch to the correct HDMI input.
  • Older PCs or laptops may need a different cable type, such as DisplayPort, USB-C, or VGA, depending on what ports they have.
  • Wireless connections like Miracast or AirPlay work without cables but require both devices to support the same standard.
  • Sound may come through the TV speakers, your PC speakers, or both — check your audio settings if you hear nothing.

What to do if your PC doesn't have an HDMI port

Older laptops and some compact PCs use different ports. Check what's on the back or side of your computer. A DisplayPort looks like a rectangle with a notch in one corner. A USB-C port is small and oval-shaped. A VGA port is a blue or black rectangle with three rows of small holes. Each one needs its own cable type.

You can buy an adapter at any electronics store or online. A DisplayPort-to-HDMI adapter costs $10 to $20. A USB-C-to-HDMI adapter costs $15 to $30. A VGA-to-HDMI adapter costs $20 to $40. Plug the adapter into your PC, then plug the HDMI cable into the adapter, then into the TV. The process works the same way as a direct HDMI connection.

If you're not sure which port your PC has, look at the manual that came with it, check the manufacturer's website, or take a photo and search for your exact model number online. The manual will list every port and what it does.

Connecting wirelessly without a cable

If you don't want to run a cable across the room, you can use a wireless connection. Windows PCs support Miracast, which lets you beam your screen to a compatible TV without any cable. Press Windows key + P, choose "Connect to a wireless display", and select your TV from the list. Your TV must have Miracast built in or you need a Miracast adapter plugged into an HDMI port.

Macs use AirPlay, which works the same way but only with Apple TVs or TVs that have AirPlay built in. Click the Control Center icon in the top right corner of your screen, click Screen Mirroring, and select your TV. The connection is usually when ready, though it can lag slightly if your Wi-Fi signal is weak.

Wireless connections are convenient but slower than HDMI. If you're watching video or playing games, a cable connection is more reliable. Wireless works best for presentations, web browsing, or showing photos. Both your PC and TV must be on the same Wi-Fi network for wireless to work.

Getting sound to come through your TV speakers

When you connect your PC to a TV with HDMI, sound usually comes through the TV speakers automatically. If you hear nothing, check three things. First, make sure your PC volume isn't muted — look at the volume icon in the bottom right corner of Windows or top right of Mac. Second, check that your TV volume is turned up and the TV isn't muted. Third, check that your TV is set to use HDMI audio, not its own tuner.

On Windows, right-click the volume icon and choose "Open Volume mixer". Look for your TV or HDMI device in the list and make sure it's not muted. On Mac, go to System Settings, then Sound, and choose your TV from the Output Device list. If your TV doesn't appear in the list, unplug the HDMI cable, wait five seconds, and plug it back in.

Some older TVs or adapters don't carry sound through HDMI. If you've tried everything and still hear nothing, you may need to plug a separate audio cable from your PC's headphone jack into the TV's audio input. This is rare with modern equipment, but it's worth knowing if you're using older gear.

Extending your display versus duplicating it

Duplicate mode shows the same picture on both your PC monitor and your TV. This is useful for presentations or showing something to a group. Extend mode treats your TV as a second monitor — you can drag windows between them and use the extra screen space. On Windows, press Windows key + P and choose "Extend". On Mac, go to System Settings, Displays, and check the "Mirror Displays" box to turn mirroring off and use extend mode instead.

Extend mode is more powerful but takes some getting used to. Your mouse can move off the edge of your PC monitor and appear on the TV. You can drag a web browser window to the TV and keep working on your PC monitor. This setup is popular for gaming, video editing, or working with multiple documents at once.

You can switch between modes anytime without unplugging anything. Just press Windows key + P again or go back to Display Settings and choose a different option. Your PC remembers which mode you were using last time you connected to that TV.

Troubleshooting when nothing appears on the TV

If you've plugged in the HDMI cable and nothing shows up, start with the TV remote. Press the input or source button and look for the HDMI port you used. The port number should match where you plugged in — if you used the port labeled "HDMI 2", select that one. Wait a few seconds for the picture to appear.

If that doesn't work, unplug the HDMI cable from both ends, wait ten seconds, and plug it back in. Sometimes the connection needs to be reset. On your PC, right-click the desktop and look for display settings or graphics settings. Click "Detect Displays" or "Identify Displays" if you see those options. This tells your PC to look for the TV again.

If you're using an adapter, try a different HDMI cable or a different adapter. Cheap adapters sometimes fail, and old cables can wear out. If you have access to another PC or another TV, test with those to figure out whether the problem is your computer, the cable, or the television. This narrows down what needs to be replaced.

Resolution and refresh rate settings

Once your PC is connected to your TV, Windows and Mac automatically choose a resolution and refresh rate that both devices support. Most of the time this works fine and you don't need to change anything. If the picture looks blurry, stretched, or has black bars on the sides, you may need to adjust these settings.

On Windows, right-click the desktop and choose Display Settings. Scroll down to "Resolution" and try a different number — higher numbers mean sharper pictures. Try "Refresh Rate" if the picture flickers or seems to stutter. On Mac, go to System Settings, Displays, and click "Resolution". Choose "Scaled" and pick an option that looks sharp to you.

Most modern TVs work best at 1920 by 1080 resolution and 60 hertz refresh rate. If you're not sure what to pick, start with those numbers. If the picture looks wrong, try the next option up or down. Your PC will explore the change when ready, so you can see the difference right away.

Frequently Asked Questions

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

Any standard HDMI cable works. You don't need to buy an expensive one — a $5 cable does the same job as a $50 cable. The only exception is if you're using a very long cable (over 25 feet), in which case a higher-quality cable may be more reliable, but even then a mid-range cable usually works fine.

What if my TV is in another room and I can't run a cable there?

Wireless options like Miracast or AirPlay work across your home network, so distance doesn't matter as long as both devices are on Wi-Fi. The connection may lag slightly depending on your Wi-Fi signal strength. If wireless doesn't work well, you can run an HDMI cable through walls using in-wall rated cables and conduit, but that requires drilling and is a bigger project.

Will connecting my PC to my TV make my PC slower?

No. Connecting a display doesn't affect your PC's performance. Your computer will run the same speed whether you're using one monitor, two monitors, or a TV. The only exception is if you're using wireless mirroring and your Wi-Fi signal is weak — that can cause slight lag in what you see, but it won't slow down your actual computer.

Can I use my TV as my main monitor all the time?

Yes, but most people don't because TVs are farther away than monitors and text can be hard to read from a distance. If you sit close to your TV, it works fine. If you sit far away, you may want to increase the text size in your programs. Go to Display Settings and look for a "Scale" or "Text Size" option to make everything bigger.

Do I need to turn off my PC before unplugging the HDMI cable?

No. You can unplug or plug in an HDMI cable while your PC is running. Your computer will notice the change and adjust automatically. The TV may go black for a moment, but nothing will break. It's the same as plugging in a USB device — no shutdown needed.