@yaminrashe84387 sorry but we really can't be making individual repair videos. This is either a driver issue or a speaker issue. I would fist uninstall teh old audio driver. Then download and reinstall the latest driver for your computer. You can get the Lenovo drivers [https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t470s/downloads/driver-list/component?name=Audio&id=3AA7F1C4-5B2A-453C-9CE2-B8FCDA8B69BA|from here]
If a new driver does not resolve this, you would want to try new speakers. Here is the [document|39047] Page 85 will tell you how to work on the speaker asembly