Thread: What launch options commands should I use?

https://support.steampowered.com/kb_...1040-JWMT-2947
this contains all the launch options for left 4 dead 1 and 2 suggesting your on 1 gig of ram you can try this
-windowed: Forces the engine to start in windowed mode.

-novid or -novideo: When loading a game with this parameter, the intro Valve video will not play

-dxlevel <level> - Forces a specific DirectX version when launching the game. This is useful if your graphics hardware is older, and gets significantly better performance in an earlier version of DirectX. Below are the most common modes used:


-dxlevel 80
-dxlevel 81
-dxlevel 90
-dxlevel 95