How to Connect Your PC to a TV: Cable, Wireless, and Casting Options

The fastest way to connect your PC to a TV

The simplest connection is usually an HDMI cable run directly from your PC to your TV. Plug one end into the HDMI port on the back or side of your computer, plug the other into any HDMI port on your TV, then switch the TV to that HDMI input using your remote. Your screen will appear on the TV within seconds, and you'll hear audio through the TV's speakers if your PC is set to send sound there.

If your PC doesn't have an HDMI port—older laptops sometimes have DisplayPort or VGA instead—you'll need an adapter. A USB-C to HDMI adapter works for newer machines; a DisplayPort to HDMI adapter works for others. These cost $15 to $30 and are available at any electronics store.

If you want to avoid cables altogether, wireless casting is possible on most modern PCs and TVs, though the setup varies by what hardware you own.

Key Takeaways

An HDMI cable is the most reliable connection and works with nearly every PC and TV made in the last ten years.
If your PC lacks an HDMI port, a USB-C or DisplayPort adapter will let you use HDMI; these cost $15 to $30.
Wireless casting through Miracast, AirPlay, or Chromecast works without cables but requires both your PC and TV to support the same standard.
After connecting, you may need to adjust your PC's display settings to extend the image to the TV or mirror it instead of using the TV as a second monitor.
Audio sometimes defaults to your PC's speakers rather than the TV; check your sound settings if you hear nothing from the TV.

Using an HDMI cable: the most straightforward method

HDMI is the standard video and audio connection for TVs and PCs. Nearly every TV made since 2010 has at least one HDMI port, usually labeled on the back panel. Most desktop PCs have one or two HDMI ports; laptops vary—newer ones almost always have HDMI, but some ultrabooks use USB-C instead.

To connect: power off both devices, plug the HDMI cable into your PC's HDMI port, plug the other end into your TV's HDMI port, then power both back on. Use your TV remote to select the correct HDMI input—your TV will show "HDMI 1," "HDMI 2," or similar on the screen. Your PC's display should appear on the TV within a few seconds.

If nothing appears, check that your PC recognizes the TV. On Windows, right-click the desktop and select "Display settings." On Mac, go to System Preferences > Displays. Both will show whether an external display is detected. If it is, you can choose to mirror your PC screen or extend it (use the TV as a second monitor).

When your PC doesn't have an HDMI port

Older laptops and some compact desktops use DisplayPort, Mini DisplayPort, or VGA instead of HDMI. You'll need an adapter that converts your PC's output to HDMI.

For USB-C ports (common on newer laptops), buy a USB-C to HDMI adapter. For DisplayPort, buy a DisplayPort to HDMI adapter. For the older VGA connector, buy a VGA to HDMI adapter. All three types are widely available online and in stores for $15 to $40. Plug the adapter into your PC, then plug the HDMI cable into the adapter's HDMI port.

Some adapters are passive (they straightforward convert the signal) and work when ready. Others are active (they contain a small chip) and may require a driver to be installed on your PC. The product listing will tell you which type it is; active adapters are usually more reliable if your PC's output is older.

Wireless casting without cables

If your TV and PC both support the same wireless standard, you can cast your screen without plugging anything in. The three main standards are Miracast (built into Windows), AirPlay (for Mac to Apple TV), and Chromecast (for devices connected to a Chromecast dongle or TV with Chromecast built in).

Miracast is the easiest if both devices support it. On Windows 10 or 11, press Windows key + K to open the Quick Settings panel, then select "Connect." Your TV should appear in the list if it supports Miracast. Click it to connect. Most Samsung, LG, and Sony TVs made since 2015 support Miracast, though you may need to enable it in the TV's settings first (usually under "Network" or "Wireless").

Chromecast works if your TV has Chromecast built in or if you've plugged a Chromecast dongle into an HDMI port. On Windows or Mac, open Chrome, click the three-dot menu, select "Cast," then choose your TV from the list. Your entire screen will appear on the TV.

AirPlay is for Mac users with an Apple TV. On Mac, click the Control Center icon in the top-right corner, select "Screen Mirroring," then choose your Apple TV.

Adjusting display settings after you connect

Once your TV appears on your PC, you can choose how to use it. Mirroring shows the same image on both your PC screen and the TV. Extending uses the TV as a second monitor, so you can drag windows between them.

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 Preferences > Displays, click the "Arrangement" tab, and check "Mirror Displays" if you want mirroring.

If the image on the TV looks stretched or cut off, your PC may not have detected the TV's native resolution. In Display Settings, look for the resolution dropdown and select the highest number available—this is usually your TV's native resolution and will look sharpest.

Fixing audio that doesn't come through the TV

When you connect your PC to a TV via HDMI, audio should automatically route to the TV's speakers. Sometimes it doesn't, and you'll hear sound from your PC's speakers instead.

On Windows, right-click the speaker icon in the system tray (bottom-right corner) and select "Open Volume mixer." Look for your TV in the list of devices and set it as the default playback device. On Mac, go to System Preferences > Sound > Output and select your TV from the list.

If your TV doesn't appear in the audio device list, your PC may not recognize it as an audio device. Disconnect the HDMI cable, wait 10 seconds, and reconnect it. Then check the audio settings again. If it still doesn't appear, your TV's HDMI port may not support audio—try a different HDMI port on the TV, or use an HDMI cable you know works with audio.

Troubleshooting a blank screen

If you've connected the cable but the TV shows nothing, start by checking the HDMI input. Use your TV remote to cycle through the HDMI inputs (usually labeled HDMI 1, HDMI 2, etc.) until you see your PC's screen. If you see nothing on any input, the TV may not be detecting the signal.

On your PC, open Display Settings and check whether the TV is listed as a connected display. If it is, click it and make sure the resolution is set to a value your TV supports (usually 1920 × 1080 or higher). If the TV is not listed, your PC may not recognize it—try a different HDMI cable, or restart both devices.

If you're using an adapter (USB-C to HDMI, for example), make sure it's fully inserted into your PC and the HDMI cable is fully inserted into the adapter. Adapters sometimes need a moment to be recognized; wait 10 seconds after plugging in before checking Display Settings.

Frequently Asked Questions

Can I use any HDMI cable to connect my PC to my TV?

Yes. All HDMI cables carry the same signal, so a cheap cable works as well as an expensive one. The only exception is if you're trying to send 4K video at high refresh rates (above 60 Hz), in which case you need an HDMI 2.1 cable, but most PCs and TVs don't support this yet.

Why does my PC screen look blurry on the TV?

Your PC is probably sending a resolution the TV wasn't designed for. Open Display Settings, click the TV, and select the highest resolution in the dropdown—usually 1920 × 1080 or 3840 × 2160. This is your TV's native resolution and will look sharpest. If the text is still hard to read, you can increase the text size in Windows Settings > Display > Scale and layout.

Can I connect my PC to my TV wirelessly if my TV doesn't support Miracast or Chromecast?

You can buy a Chromecast dongle (about $30) and plug it into any HDMI port on your TV. This adds Chromecast support to any TV. Alternatively, use an HDMI cable—it's more reliable than wireless casting and doesn't depend on your TV's built-in features.

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

No. The TV is just a display; it doesn't affect your PC's performance. If your PC feels slow after connecting, something else is causing it—check whether a heavy program is running in the background.

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

Yes, but TVs are not ideal for this. They have slower response times than monitors, higher input lag (a delay between your keyboard press and the action on screen), and sitting close to a large TV for hours can strain your eyes. For occasional use, it's fine; for daily work, a monitor is better.

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.