Steps to reproduce
Download suggested Obsidian installer on Windows 7. Install and run Obsidian.
Obsidian version working on Windows 7.
Obsidian installed but not working on Windows 7 due procedure entry point not found in shell32.dll.
Detect Windows 7 on Obsidian homepage and suggest installer version 1.1.16. Partly due to the fact that in order to update to the latest version, the user will need to install a non-working version, remove it, reinstall 1.1.16 and enable automatic updates. This helped me update Obsidian to v1.3.4 (Installer version: v1.1.16) on Windows 7.
Thanks for the Obsidian and your hard work. Sandy and Blaze are so cute