若電腦沒有聲音，可依次檢查以下問題：先確認音頻設(shè)備連接正常、未靜音、音量足夠，並切換輸出設(shè)備；其次重啟Windows音頻服務(wù)及相關(guān)服務(wù)；接著更新或重裝音頻驅(qū)動程序；最後測試不同應(yīng)用和外設(shè)以排除軟硬件問題。多數(shù)情況下通過上述步驟即可解決系統(tǒng)無音故障。

If your computer's sound isn't working, you're not alone — it's a common issue with several possible causes. The good news is that most fixes are straightforward and don't require technical expertise. Let's go over some practical steps to help get your audio back on track.

Check Basic Settings First

Before jumping into advanced troubleshooting, start with the obvious:

• Make sure your speakers or headphones are properly plugged in or connected (if wireless).
• Unmute the audio by clicking the speaker icon in the taskbar.
• Turn up the volume — sometimes it's just set too low.
• Try switching output devices by clicking the speaker icon and selecting another device under "Go to Sound settings" or directly from the playback menu (right-click the speaker icon and choose “Sounds” or “Open Sound settings”).

Also, check if other apps are muted individually. In Windows, for example, you can open Settings > System > Sound , and scroll down to “Advanced sound options” to see app-specific volume levels.

Restart Audio Services

Sometimes, the problem lies with background services that handle sound. Restarting them can often fix the issue without needing a full system reboot.

Here's how to do it in Windows:

1. Press Win R , type services.msc , and hit Enter.
2. Scroll down to Windows Audio .
3. Right-click it and select Restart .
4. If it's disabled, right-click again, go to Properties , and set the startup type to Automatic .

You can also try restarting related services like Windows Audio Endpoint Builder .

This trick works especially well if your sound stopped working after waking your laptop from sleep or after an update.

Update or Reinstall Audio Drivers

Outdated or corrupted drivers are one of the top reasons for no sound. Updating your audio driver is usually simple:

• Open Device Manager ( Win X then click Device Manager ).
• Expand Sound, video and game controllers .
• Right-click your audio device (it might say something like Realtek High Definition Audio) and choose Update driver .

If that doesn't work, try uninstalling the driver instead:

• Right-click the audio device and select Uninstall device .
• Check the box that says “Delete the driver software for this device” if available.
• After uninstalling, restart your computer — Windows should reinstall the driver automatically.

If not, visit your computer manufacturer's website (or motherboard maker if you built your own PC) to download and install the latest audio driver manually.

Test with Different Devices and Apps

It's possible the issue isn't with your system but with the app or hardware you're using.

• Try playing sound through different apps (like YouTube, Spotify, or a video player).
• Plug in a different pair of headphones or external speakers.
• If you're using external speakers, test them on another device to rule out a hardware problem.

Also, check if system sounds (like notification chimes) play — if they do, the problem may be limited to specific apps rather than your overall audio system.

基本上就這些。 Most sound problems can be resolved with these basic checks and fixes. If none of them work, it might be worth checking for OS updates or reaching out to support — but 9 times out of 10, one of the above steps will bring your sound back.

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