Hello, thank you for reaching out to Microsoft Q&A.
- May I please know the make and model of your Chromebook?
- Has the touchscreen ever worked before, or is this the first time you’re trying to use it?
Please note that Chromebooks run on ChromeOS (Google's operating system), not Windows, so the troubleshooting steps will be different. Make sure your device actually supports a touchscreen, and post your question in the appropriate Chromebook forum for accurate help.