That screenshot is of the launcher, not the game itself, is that right?
Can you start the game from stellaris.exe directly? That bypasses the launcher.
As to the launcher problem, Please try this:
- uninstall Paradox Launcher v2 from the Windows "Apps and features" utility, if still present.
Delete the following folders if still present:
- C:/users/{userName}/AppData/Local/Programs/Paradox Interactive/
- C:/users/{userName}/AppData/Local/Paradox Interactive/
- C:/users/{userName}/AppData/Roaming/Paradox Interactive/launcher-v2/
To see the AppData folder you'll need to enable View Hidden Items in File Explorer.
- exit the Galaxy app entirely
- run Galaxy.exe as the Windows Admin user
- run the game from the PLAY button in Galaxy
IF that doesn't help, in this folder are some .log files:
C:/users/{userName}/AppData/Local/Paradox Interactive/launcher-v2/
Please attach them here.
To see the AppData folder you'll need to enable View Hidden Items in File Explorer.