If your speaker volume is muted or too slow, you can’t hear sound from the speakers. Thirdly, make sure that your speaker volume isn’t muted or turned down too low. If you’re not sure which jack this is, try plugging your speakers or headphone in to each of the jacks to see if any of them produce sound. Your speakers should be plugged in to the line-out jack. Many computers have three or more jacks that connect to a sound card or sound processor, including a microphone jack, line-in jack, and line-out jack. Secondly, make sure they are correctly plugged in to the computer (for desktop computers) If not, you might need to replace it with a new one. If it works properly, there is no problem with the speakers. To check if the speakers have problem, try in on another and see if it works. When a device is not working, the first thing you should check is if the device itself is working properly.

Firstly, check if the speakers have problem

If you encounter this problem, follow tips here to troubleshoot the problem and find the solution that works for you. The speakers could be damaged, the sound could be muted, the audio driver could be faulty and so forth. For external speakers not working in Windows 10, there are several reasons causing this problem.

How to hear line in through speakers