If Cortana doesn't respond when you speak into your PC, this might be why:
Your microphone may be not be set up. In the search box on the taskbar, type set up a microphone, and then select Set up a microphone and follow the prompts.
You may not have a microphone. In the search box on the taskbar, type Manage audio devices and select the result. Go to the Recording tab of the box that appears. If you have a microphone, you'll see it listed here.
- If you're going through the set up experience, there may not be an issue with your computer or microphone. Cortana's ability to recognize incoming speech comes from cloud-based Microsoft Speech Services, which is only activated after you've given consent and are connected to the internet. As a result, it may appear that Cortana is not hearing you correctly. You can complete the process with text if necessary.