Based on the phrasing "lilly and silly 2023 neonx original install," you might be trying to recreate a setup you saw in a guide or a video from 2023.
(Invoking related search terms for this topic.) lilly and silly 2023 neonx original install
Do not launch via the desktop shortcut yet. Navigate to the install folder and run Neonx_Launcher_DEBUG.exe first. If you see a pink wireframe cube spinning, close it. This warms up the shader cache. Then, use the regular shortcut. Based on the phrasing "lilly and silly 2023