You can use the Chrome browser to stream videos from a Windows 10 PC to your projector. Here's how:

1. Make sure your Windows 10 PC and projector are connected to the same W-Fi. You can use your phone's hotspot.

2. Open Chrome on your Windows 10 PC. In the top right corner of Chrome, go to More > Cast.

3. Choose the Chromecast device you want to watch content from, and then watch it on your projector.

If you still have any questions or concerns regarding the mirror steps, please contact us for further assistance.