Why the sound does not work on the laptop when watching videos - a complete troubleshooting guide

You launch the video on YouTube, Netflix or local player, and the sound suddenly disappears - the picture is playing, but the speakers are silent. Or there is sound, but it is interrupted, distorted, or only works through headphones. Is the situation familiar? This problem occurs on laptops of all brands - from budget Acer And Lenovo up to bonus MacBook Pro and gaming ASUS ROG. The reasons may lie in both system settings and hardware faults.

In this article we will look at all possible reasons for no sound when watching a video - from trivial (disabled speakers) to complex (driver conflicts or damaged audio codecs). You will receive step by step instructions for Windows 10/11, macOS And Linux, and also learn how to diagnose the problem without contacting a service center. We will pay special attention to cases where sound works in the browser, but is missing in players (or vice versa), as well as problems after a system update.

Before moving on to the solution, answer one question: the sound disappears only when watching videos or missing completely (including system signals, music, games)? This will help narrow down the possible causes.

1. Checking basic settings: what to do first

Start with basic checks - in 30% of cases the problem is solved in just 1-2 clicks. These steps apply to any operating system.

Step 1: Make sure audio is not muted at the application or system level. In the browser (for example, Chrome or Firefox) click on the speaker icon on the video tab - it may be crossed out. In local players (VLC, MPC-HC) check the volume slider inside the program - sometimes it resets to zero after an update.

Step 2: Check the physical controls. On some laptops (eg Lenovo ThinkPad or Dell Latitude) there are separate buttons to mute the sound (F1–F12 with speaker icon). Press them in combination with Fn. Also make sure that the mode is not activated "Do not disturb" (in Windows 11 it can block sound for specific applications).

• 🔊 In the browser: RMB on tab → Open in new window (sometimes the sound disappears due to tab restrictions).
• 🎧 Headphones/speakers: Disconnect and reconnect the device - the problem may be in the connector 3.5 mm or Bluetooth- connection.
• 🔄 Reboot: A simple laptop reboot solves the problem in 15% of cases (especially if the sound disappears after sleep/hibernation).

Step 3: Check your default playback device. B Windows click on the speaker icon in the tray → select the correct device (for example, Speakers (Realtek Audio), not Digital Audio (HDMI)). On macOS open System Preferences → Sound → Output and select Built-in speakers.

2. Problems with sound drivers: how to update or reinstall

In 40% of cases, the sound disappears due to a failure or an outdated version of the sound card driver. This is especially true after the update Windows (for example, before Windows 11 23H2) or replacing the motherboard. Symptoms: There is sound in the headphones, but not in the speakers, or the video plays with stuttering.

How to check the driver in Windows:

1. Click Win + X → select Device Manager.
2. Expand the thread Sound, gaming and video devices.
3. If you are near the device (for example, Realtek Audio or NVIDIA High Definition Audio) exclamation mark is on, the driver is not working correctly.

Solutions:

• 🔄 Update driver: RMB by device → Update driver → Automatic search. If the system says that the driver is up to date, download it manually from the laptop manufacturer’s website (for example, Lenovo Support or ASUS Download Center).
• 🗑️ Uninstall and reinstall: RMB by device → Remove device → restart your laptop. The system will install the driver automatically.
• 🛠️ Roll back driver: If the problem appeared after the update, go back to the previous version (tab Driver → Rollback).

For macOS And Linux the situation is different: sound drivers are built into the system kernel. If the sound disappears after an update (for example, on macOS Sonoma), try resetting NVRAM:

1. Выключите Mac.
2. Включите, сразу зажмите Command + Option + P + R.
3. Удерживайте 20 секунд (на Mac с чипом Apple Silicon — до появления логотипа).

How to find out the sound card model in Linux?

Open a terminal and enter the command lspci | grep -i audio. You will see a line like 00:1f.3 Audio device: Intel Corporation Alder Lake PCH-P High Definition Audio Controller (rev 01) - this is your sound card.

3. Audio device conflicts: HDMI, Bluetooth and virtual speakers

The laptop may get confused with audio output devices, especially if you connected an external monitor via HDMI, use Bluetooth-headphones or virtual audio devices (for example, for recording streams). Typical scenario: the sound goes to HDMI-monitor, although you watch the video on the built-in screen.

How to check:

1. B Windows: RMB on the speaker icon → Open sound options → tab Conclusion. The following may appear here:
• Speakers (Realtek Audio) — built-in speakers;
• Digital Audio (HDMI) — the sound goes to the monitor;
• Headphones (Bluetooth) - even if they are disabled;
• VB-Cable or Voicemeeter - virtual devices.

Select the correct device and click Check (a signal should sound).

Solutions for common conflicts:

Problem	Reason	Solution
The sound comes to the HDMI monitor, although it is disabled	Windows "remembers" the last output device	Turn off in sound options Digital Audio (HDMI) or set it as default device
The sound only works in headphones, although they are disabled	Connector detection failure 3.5 mm	Disconnect the headphones, restart the laptop, check the connector for dirt
Sound is interrupted when connecting Bluetooth devices	Profile conflict (for example, Hands-Free instead of A2DP)	In Bluetooth settings, select a profile Stereo sound (A2DP)

Critical error: if the output device is not listed Speakers (Realtek/Intel), this means that the sound card driver is not installed or the audio chip is disabled in the BIOS. In this case, you need to reinstall the driver manually or reset the BIOS (see section 5).

4. Problems with codecs and players: why the video plays but there is no sound

If there is no sound only in certain players (for example, in VLC or MPC-HC), but works in the browser or system applications, the problem lies in audio codecs or program settings. This is especially true for video formats .mkv, .avi or with multi-channel audio (DTS, AC3).

Checklist for diagnostics:

Solutions for popular players:

• 🎬 VLC Media Player:
  1. Open Tools → Settings → Audio.
  2. In the section Exit select DirectX or WaveOut instead of Wasapi.
  3. Enable the option Use only one audio device.

🖥️ MPC-HC: Check the box Internal Filters → Audio Switcher and select Default DirectSound Device.

🌐 Browsers (Chrome, Firefox): Disable ad blocking extensions (such as uBlock Origin) - they can block audio tracks.

If the video is in .mkv with multi-channel sound (5.1 or 7.1), but you have stereo speakers, the player may be silent. Solution: in the player's sound settings, forcefully select stereo mode (Stereo or Downmix to Stereo).

5. Hardware faults: when you can’t do without service

If none of the software methods help, the problem may be physical breakdown. This is true for laptops older than 3–4 years or after mechanical impacts (falls, liquid ingress). Let's look at typical hardware reasons:

• 🔌 Audio chip damage: A common problem with Lenovo And HP — chip contacts fall off Realtek ALC (For example, ALC256 or ALC295). Symptom: There is sound in the headphones, but not in the speakers.
• 🔊 Broken speaker cable: Relevant after disassembling the laptop or falling. Check if there is a cracking sound when you press the housing near the speakers.
• 🔋 Nutrition problems: On some models (for example, ASUS TUF) the sound disappears when the battery discharge is below 20% - this is due to energy saving.
• 🌡️ Overheat: If the laptop overheats, the audio chip may turn off. Check the temperature using HWMonitor.

How to diagnose a hardware problem:

1. Connect external speakers or headphones via 3.5 mm or USB. If there is sound, the problem is in the speakers or cable.
2. Boot from Live USB (For example, Ubuntu). If there is no sound even there, there is a hardware fault.
3. Check if the sound card is detected in BIOS (on some laptops it can be disabled in the settings Advanced → Onboard Devices).
How to check the speaker cable?

Gently press the laptop body in the area of the speakers (usually on the sides of the keyboard). If the sound appears/disappears, this is a sign of poor cable contact.

Repair cost:

Problem	Average repair cost (2026)	Difficulty
Replacing the audio chip	3 000–8 000 ₽	High (soldering station required)
Re-soldering the speaker cable	1 500–4 000 ₽	Average
Cleaning the 3.5 mm jack	500–1 500 ₽	Low

⚠️ Attention: If you are not experienced in electronics repair, do not attempt to re-solder the audio chip or cables yourself. On modern laptops (for example, MacBook Air M1 or Dell XPS) components are extremely tiny, and careless intervention can lead to a short circuit.

6. Features for macOS: why there is no sound in Safari or Chrome on MacBook

On laptops Apple (especially with chips M1/M2) the sound may disappear due to specific problems with application access rights or conflicts with Bluetooth-devices. Let's look at typical scenarios:

Problem 1: There is sound in QuickTime Player, but not in Safari or Chrome.

• 🔒 Solution: Open System Settings → Privacy and Security → Microphone and check if the browser has access to audio devices. Yes, even audio playback sometimes requires permission!
• 🔄 Reset rights: B Terminal run the command:

  tccutil reset All com.google.Chrome

  (replace com.google.Chrome on com.apple.Safari, if the problem is in Safari).

Problem 2: Sound cuts out when connected AirPods.

This is due to automatic profile change A2DP (stereo) on HSP (mono for calls). Solution:

1. Open System Settings → Bluetooth.
2. Click Options next to AirPods.
3. Select Use as: Stereo headphones.

Problem 3: After updating to macOS Sonoma the sound becomes quiet or distorted.

This is a known driver bug. Apple T2 And M1/M2. Solutions:

• 🔊 Disable Sound improvement in System Preferences → Sound → Output.
• 🔄 Reinstall the update macOS over the existing system (without disk wipe).
• 🛠️ Reset PRAM/NVRAM (see instructions in section 2).

⚠️ Attention: On MacBook Pro 2018–2020 with chip T2 after replacing the speakers it may be necessary flashing through Apple Configurator. It is impossible to do this on your own - contact the service center.

7. Viruses, malware and system crashes

Rarely, the sound may disappear due to viruses or failures in system files. For example, Trojans of the family Vawtrak or AdLoad may block audio drivers and updates Windows sometimes files get corrupted audio.dll.

Signs of infection:

• The sound disappears after visiting dubious sites.
• B Task Manager Unknown processes appear with high CPU load.
• Antivirus (Kaspersky, ESET) issues warnings about suspicious activity.

How to check and fix:

1. Scan the system Malwarebytes or AdwCleaner (they find what the standard one misses Windows Defender).
2. Open Control Panel → Programs and Features and remove suspicious applications (for example, AudioDriverUpdater or HD Audio Manager).
3. Restore system files using the command:

   sfc /scannow

   If this doesn't help, run:

   DISM /Online /Cleanup-Image /RestoreHealth

If the problem appeared after the update Windows, try rolling back:

1. Open Settings → Update & Security → Recovery.
2. Select Go back to a previous version of Windows.

Important: if the virus has damaged files C:\Windows\System32\drivers\*.sysrelated to sound (for example, portcls.sys or drmk.sys), the system may need to be reinstalled.

FAQ: Frequently asked questions about sound on a laptop

🔊 There is sound in the headphones, but not in the speakers - what should I do?

This is a typical sign of a problem with the audio chip or speaker cable. First try:

1. Update the sound card driver (see section 2).
2. Check if the speakers are muted in Device Manager.
3. Connect external speakers - if there is sound, the problem is in the laptop speakers.

If all else fails, contact service - the chip or cable may need to be re-soldered.

🎥 The sound disappears only in YouTube, but in other players - why?
The reasons may be as follows:
• Ad blocker (uBlock, AdBlock) mutes audio tracks.
• The browser has muted the sound for a specific site (click on the speaker icon on the tab).
• Conflict with extensions (try opening YouTube in incognito mode).
• Problem with codecs in the browser (update Chrome or Firefox).
🔄 After updating Windows, the sound became quiet or distorted - how to fix it?
This is a common problem after major updates (for example, Windows 11 23H2). Solutions:
1. Roll back your sound card driver to the previous version.
2. Disable sound enhancements: RMB on the speaker icon → Sounds → tab Playback → device properties → disable Improvements.
3. Install the driver from the laptop manufacturer's website (not through Windows Update).
💻 There is no sound on Linux (Ubuntu, Mint) - what to do?

On Linux, sound problems are often related to PulseAudio or ALSA. Try:

1. Restart PulseAudio:

   pulseaudio -k && pulseaudio --start

2. Check the volume level in alsamixer (open a terminal and enter alsamixer, then click F6, select the sound card and check if the sound is muted with the button M).
3. Install missing packages:

   sudo apt install pavucontrol linux-sound-base alsa-base alsa-utils

🔧 Is it possible to fix the sound on a laptop yourself?

Depends on the reason:

• ✅ You can: Reinstall drivers, clean connector 3.5 mm, reset BIOS settings.
• ❌ You can't: Re-solder the audio chip, replace speaker cables (without experience and a soldering station).

If the problem is hardware, it is better to contact the service - the cost of repair is usually lower than the risk of completely breaking the laptop.