Hi there! I'm sorry to hear that you're experiencing issues with Firefox 115.0.3 on Windows 7. To help you with the download and installation, please follow these steps: First, make sure you have a stable internet connection. Go to the official Mozilla website (mozilla.org) and navigate to the "Download" section. Click on the download link for Firefox 115.0.3 for Windows 7. Once the download is complete, locate the downloaded file and double-click on it to start the installation process. Follow the on-screen instructions to complete the installation. If you encounter any problems during the installation, such as error messages or issues with the browser after installation, please provide more details, and we'll do our best to assist you further.