If the indicator of the Xiaomi wireless mouse does not light up, please refer to the following methods to troubleshoot the issue:
1. Check whether the power switch on the bottom of the mouse has been turned to the open state;
2. Restart the mouse and computer to check if the issue persists;
3. Check the mouse for any visible damage, especially around the area where the indicator light is located as the appearance of trauma can cause LED failure;
4. Confirm whether the battery is sufficient and placed properly, or you can replace a new one;
5. Ensure that the battery contacts are clean and making proper contact with the batteries. Sometimes dirt or corrosion can hinder the connection;
6. Verify that your mouse is compatible with your operating system;
7. Try connecting the mouse and receiver to another computer to isolate whether the problem lies with the mouse or the original computer.
If the issue persists, please contact our local official service center or your seller for further assistance. They will help you in this regard.