Downgrade Gta Iv To 1.0.7.0 -

Since 1.0.7.0 relies on older libraries:

Once you are stable on 1.0.7.0, head to GTAInside or GTAForums to grab Project Reality (an ENB) or Vanilla Fixes to make Liberty City look better than GTA V. downgrade gta iv to 1.0.7.0

The Complete Edition (current Steam version) is notorious for missing songs and vehicles due to expired licenses. Downgrading allows you to manually restore this content or use mods that re-enable: Since 1

Always launch the game via LaunchGTAIV.exe (as administrator) rather than through the Steam library once you've downgraded to avoid the launcher trying to "update" you back to the broken version! GTA IV on PC is infamous

GTA IV on PC is infamous. The "Complete Edition" on Steam/Rockstar Launcher runs on patch or 1.0.7.1 (depending on the platform). These later patches introduced:

: Avoid mandatory launcher logins for single-player play.