Go to the “Audio inputs and outputs” section. If your headphone is much older than that, then maybe it’s not working properly, and that’s what causing the issue. The average lifespan of any microphone-based headphone is near about 2 years. You would be surprised to know that many times we use a damaged peripheral with our laptop and wonder why it’s not working. There are multiple ways by which you can troubleshoot and fix this problem. Whether you are working on a Macbook or a Windows laptop, you might see this issue very frequently. How to Fix Audio Jack Not Working on Laptop Solution 10: Uninstall unnecessary software/adware.