Use a TV as a second Windows display

HDMI is a direct video connection; wireless casting uses a supported protocol such as Miracast and depends on both devices. A TV’s Google Cast or AirPlay support does not automatically make it a Windows Miracast display. Check the TV and computer specifications before choosing a method.

1. For HDMI, connect the computer to a TV HDMI input with a suitable cable and select that input on the TV.

   The TV should appear as an external display if the computer’s output and the cable/adapter are supported.

   If that does not help: If it stays blank, reseat the cable, test another input if available, and check the computer’s display output support.

2. For Windows wireless display, confirm the TV or receiver supports Miracast, turn it on, then press Windows+K and select it.

   A compatible receiver should appear in the available displays list.

   If that does not help: If it does not appear, check both devices’ wireless-display documentation; same Wi-Fi alone does not establish Miracast support.

Windows offers PC screen only, Duplicate, Extend and Second screen only. Choose Extend to move windows between the computer and TV as separate work areas. Duplicate shows the same image on both displays. The TV may need a compatible resolution and refresh rate; use the “recommended” or TV-reported mode before trying custom values.

1. Press Windows+P and select Extend.

   The desktop spans the computer display and TV, and you can move windows between them.

   If that does not help: If only one screen appears, use Windows Display settings to detect displays and check the cable/adapter.

2. Open Display settings and arrange the TV relative to the laptop screen; select a resolution supported by the TV.

   The pointer should move in the direction that matches the display arrangement.

   If that does not help: If edges are cut off, use the TV’s documented screen-fit or PC input options and the computer’s recommended resolution.

3. Choose the TV as the audio output only if you want sound through its speakers.

   Audio can remain on the computer even when the TV carries video.

   If that does not help: If HDMI audio is absent, check the OS audio-output selector and cable/adapter capabilities.

A TV can work as an occasional large display, but it may not feel like a desktop monitor at close range. Check supported resolution and refresh rate, text clarity, overscan, input lag and brightness. Some TVs provide a PC input label or PC mode that changes scaling; use only the exact manufacturer’s instructions. A long HDMI cable, adapter or dock can introduce additional limits.

1. Set the computer to the TV’s supported native or recommended resolution.

   Text and edges may become clearer and fit the panel more accurately.

   If that does not help: If the image is blurry, use the display’s supported text-scaling controls rather than forcing an unsupported resolution.

2. Test keyboard/mouse response and video playback at your intended distance.

   You can decide whether the TV suits work, presentations or media use.

   If that does not help: If cursor or typing delay is distracting, check the TV’s picture/game mode documentation and the wireless/cable connection.

3. If using the TV for long sessions, use a screensaver or turn the display off when idle.

   This avoids leaving a static desktop on-screen unnecessarily.

   If that does not help: Follow the TV manual’s burn-in and panel-care guidance, especially for OLED models.

If the TV does not appear, identify whether you are using wired HDMI, Miracast, AirPlay or Google Cast. These methods are not interchangeable. Try a direct cable connection or a receiver that explicitly supports the computer’s protocol, then use the display-adapter manufacturer’s troubleshooting if needed.

Set the computer’s output mode and the TV’s matching input, then isolate cable and wireless-display support by method.

• PC text looks blurry on a TV over HDMI
• TV says no signal on an HDMI input

• How to use multiple monitors in Windows — checked 2026-10-29
• Screen mirroring and projecting to a wireless display — checked 2026-10-29

Can I extend my Windows desktop to a TV?

Yes, if the computer can output to the TV by a supported wired or wireless method. Press Windows+P and select Extend for a separate desktop.

Does every smart TV support wireless PC display?

No. The TV and computer must share a supported wireless display protocol, such as Miracast for the Windows flow described here.

Why is text blurry on a TV used as a monitor?

The computer may be using an unsupported or non-native resolution, or the TV may be scaling the PC input. Use supported display settings and the model’s PC-input guidance.