How to Connect a Computer to a TV

Analysis of Technological Connections and Practical Solutions

This article thoroughly discusses reliable methods for connecting a computer to a television and clearly explains when to choose wired versus wireless technologies. It provides descriptions of relevant interfaces – HDMI, VGA, DVI, DisplayPort – as well as wireless solutions (e.g., Miracast, Google Cast), including their operating principles, compatibility, and typical use cases. The focus is not only on video but also on audio transmission, HDR, variable refresh rate (VRR), eARC aspects, and interactivity when content is controlled in real-time from a computer or phone.

In addition to technical details, user experience and practical integration are analyzed: how to quickly set up the system, what cables or adapters are needed, potential issues, and how to avoid them. It is emphasized that the decision depends on user needs (gaming, watching movies, presentations), the capabilities of the devices available, and the budget.

In summary, wired connections generally offer stability and high video and audio quality, while wireless methods provide mobility and convenience. Economically rational configurations and recommendations are summarized, considering compatibility, security, and long-term benefits. Quantitative and qualitative assessments indicate that combining both methods (e.g., using a cable for the main screen and wireless for additional screens or quick presentations) often achieves optimal results.

The Importance of Integrated Systems: Connecting a Computer and TV

In recent decades, technological development has fundamentally changed the home cinema, work, and learning experience: large screens and computers function as a shared ecosystem for presentations, movies, gaming, and remote work. The ability to reliably connect a computer to a television has become critically important in both home and business environments.

This text systematically explains how to connect a computer to a TV and discusses the most popular methods along with their advantages and limitations. First, wired connections (HDMI, VGA, DVI, DisplayPort) are evaluated based on their bandwidth, resolutions, audio transmission, and compatibility with older or professional systems. Next, wireless technologies (e.g., Miracast, Google Cast) are reviewed, allowing for the elimination of cables, especially when mobility, quick reflection, or content sharing is important.

Practical aspects are emphasized: which cable or adapter to choose, how to configure the operating system, and how to identify and resolve issues (e.g., incorrect input in the TV menu, resolution mismatches, audio routing errors). These guidelines are relevant for both users and administrators seeking a reliable, easily manageable, and cost-effective system.

Analysis of Previous Research and Theoretical and Practical Insights

The literature extensively discusses the evolution of wired video interfaces from analog VGA to digital DVI, HDMI, and DisplayPort, increasing bandwidth, color depth, HDR support, and integrating audio and control functions. The analysis shows that HDMI has become a universal standard for consumer electronics (especially in televisions), while DisplayPort is more commonly found in computers and workstations due to its high bandwidth, multi-stream transport (MST), and flexibility.

Wireless technologies have evolved from manufacturer-specific solutions to widely supported standards (e.g., Miracast), while browser-based and software methods (e.g., Google Cast from Chrome) have simplified one-time presentations and content streaming to TVs. Sources also highlight the importance of audio return via HDMI (ARC/eARC) when quality multi-channel audio needs to be transmitted to soundbars or AV receivers.

From an economic perspective, wired connections typically require lower operational costs and guarantee stable quality, while wireless solutions reduce installation complexity and improve mobility, although they may require additional receivers or upgrades. Practical examples indicate that the choice is influenced by device interfaces, distance, cable quality, and environmental interference (especially in Wi-Fi networks).

Wired Connections and Signal Transmission Standards

Wired Connections
Wired connections remain the most reliable way to achieve stable video and audio quality, especially when high resolution or low latency is required.

HDMI (High-Definition Multimedia Interface)
HDMI transmits both video and audio through a single cable, making it the simplest and most versatile choice for TVs. Modern versions support 4K/120 Hz and even 8K/60 Hz (and HDR), variable refresh rate (VRR), and auto low latency mode (ALLM) features. eARC (enhanced audio return channel) ensures the transmission of high-resolution audio formats to a soundbar or AV receiver without additional cables.

VGA (Video Graphics Array)
VGA is an analog interface suitable only for older devices. While still found in projectors or older monitors/TVs, VGA limits resolution and degrades video quality on larger screens. In modern scenarios, digital alternatives are recommended.

DVI (Digital Visual Interface)
DVI provides digital video (without audio), so it can be used with adapters (e.g., DVI–HDMI) in situations where an older computer needs to connect to a newer TV. It serves as a transitional solution when HDMI or DisplayPort are not available.

DisplayPort
DisplayPort is focused on the computer ecosystem and professional workstations: it offers high bandwidth, multi-stream transport (MST), and robust VRR support. Newer versions allow for extremely high frequencies and resolutions, making it a good choice for monitors, gaming, or graphics work, and with adapters, it can also connect to TVs.

Modern Solutions Without Wires

Recently, screen mirroring and streaming over home Wi-Fi networks have become widespread, often eliminating the need for cables.

Miracast and WiDi
Miracast is a “Wi-Fi Alliance” standard that operates over “Wi-Fi Direct” and allows for mirroring a computer or phone screen to a TV without a router. It is convenient for presentations and short-term mirroring. Historically, Intel WiDi served a similar role, but its development has been discontinued; today, Miracast or other widely supported methods are recommended.

Google Cast
Google Cast (including Chromecast and Chromecast built-in) allows users to stream a tab, the entire desktop, or app content from Chrome and other compatible applications. This is especially convenient in mixed environments where quick content sharing from different devices is important.

Additional Wireless Solutions
Some manufacturers offer hybrid methods (e.g., separate HDMI receivers or USB-C docks with wireless casting) that combine easy setup with sufficient quality when running cables is inconvenient.

Simplicity of Interfaces, Interactivity, and Adaptability

User experience is determined not only by technical parameters but also by how easy it is to set everything up, control, and modify.

Ease of Use and Installation Process
Wired connections often only require correctly plugging in the cable and selecting the appropriate input on the TV. Wireless solutions sometimes require activating mirroring features in the TV menu, Windows, or the browser, updating software, and ensuring a stable Wi-Fi connection.

Level of Interactivity and Multimedia Control
Casting solutions allow for real-time content switching, displaying presentations, videos, or browser tabs, while remote controls or phones become convenient alternatives to traditional remotes. This is especially valuable in seminars and meetings.

Signal Quality and Data Protection

Security and quality are influenced by several factors: the quality of the cable and connections, correct TV input, matched resolutions, and refresh rates. HDMI supports content protection (e.g., HDCP), while wireless solutions emphasize network security (encryption, passwords) and noise management in the 2.4/5 GHz bands. eARC allows for uncompromised transmission of multi-channel audio (e.g., Dolby TrueHD/DTS:X) to compatible audio equipment.

System Installation and Device Compatibility Analysis

Over time, system configurations have become simpler, but a tidy checklist still helps avoid mistakes.

Steps for Device Configuration
Initial system: before connecting, turn off devices and visually inspect the connections and cable.
Choosing cables and adapters: select a standard that matches your resolution/frequency (e.g., HDMI cable with “Ultra High Speed” labeling for 4K/120 or 8K cases).
Physical connection check: firmly insert the cables and select the appropriate HDMI/DisplayPort input in the TV menu.
Software configuration: adjust resolution, scaling, HDR, and audio output (e.g., to a soundbar via eARC) on the computer.
Testing and diagnostics: ensure that the image is not tearing, there is no flickering or audio delay; if necessary, reduce resolution/frequency or change the cable/input.

Analysis of Practical Methods
Laboratory and practical tests show that shorter, well-shielded cables reduce interference, while wireless systems are sensitive to network load and router placement. With proper parameter adjustments, both directions can ensure high quality.

Description of Experimental Tests
To ensure objectivity, the following criteria are evaluated:

• Signal transmission speed and stability at real resolution/frequency;
• Compatibility between computer video output and TV input;
• Interference (electromagnetic interference, Wi-Fi load);
• Power consumption and long-term reliability.

The results confirm that cables are suitable when maximum quality and minimum latency are required, while wireless solutions excel in mobility and quick setup – especially at home and during presentations.

The Importance of Software
The operating system and TV software directly affect video/audio routing, HDR, VRR, and scaling. Useful OS features include: Windows screen mirroring/extension, Chrome tab or desktop casting, and manufacturer-specific “Screen Mirroring/AirPlay” menus on TVs.

Challenges in System Installation
– Device compatibility (different generations of ports, HDCP/HDR mismatches).
– Signal loss or artifacts (poor-quality or overly long cables, incorrect input).
– Software differences between OS or TV models.
– Environmental factors (noisy Wi-Fi, obstacles between transmitter and receiver).

Integration Challenges, Trends, and Future Perspectives

Wireless methods are rapidly evolving – codecs are improving, latency is decreasing, and casting support is increasing. At the same time, wired standards are increasing bandwidth and feature sets (VRR, eARC, HDR), making them the first choice for high-quality content. In the future, even deeper integration levels, automatic optimal resolution/frequency selection, and smarter diagnostics that reduce user intervention are expected.

Economic analysis shows that investments in quality cables and compatible equipment pay off in stability, while wireless solutions provide flexibility and lower installation costs. Success is determined by the appropriately chosen method based on the scenario (e.g., cable for gaming, cast for presentations), consistent device updates, and clear user education.

Summary of Key Findings and Recommendations

Based on the analysis and practice, it is recommended:
Diversity of Technologies: choose a cable when quality and low latency are paramount (4K/120, HDR, VRR), and a wireless solution when mobility and quick content sharing are important.
User Experience as a Key Indicator: success is determined by the correct TV input, appropriate cable, matched resolution/frequency, and simple OS commands (mirroring/extension, casting).
Importance of Economic Solutions: it is worth investing in certified cables and supported receivers; for wireless solutions, ensure reliable Wi-Fi.
Future Perspectives and Innovations: automated compatibility checking, intelligent resolution/frequency selection, energy consumption optimization, and broader support for high-quality audio formats.

In summary, it is optimal to combine both methods: use a cable for the main work/leisure station and a reliable wireless cast for quick content sharing.

Bibliography

Bite Profai. (2025). How to connect a computer to a TV without a cable?

Google Support. (n.d.). Casting from Chrome to TV.

LG. (2023). How to connect an LG TV to a computer (HDMI).

Microsoft Support. (n.d.). Screen mirroring and projecting to a wireless screen (Windows).

Philips. (n.d.). What is Miracast and how to set it up on a Philips TV.

Samsung. (n.d.). What is eARC and how to set it up on a Samsung TV.

Sony. (n.d.). Connecting a computer and viewing saved content (HDMI).

Technews.lt. (2024). Certified DisplayPort 2.1 cables are too short – VESA is preparing DP80 specifications.

Tom’s Hardware. (2025). DisplayPort vs. HDMI: which is better for gaming?

HDMI Licensing Administrator. (2020). HDMI 2.1 Specification (summary documents).

Intel. (2020). Product Discontinuation Notice for Intel® WiDi / Pro WiDi.

1A.lt. (2023). How to connect a computer to a TV?

Senukai.lt. (2022). Tips for connecting a computer to a TV.

Pigu.lt. (n.d.). How to connect a computer to a TV?