Problematic Error

[floaterbo]

Every time I run a source engine game, as soon as the engine starts up I usually get the following error:

Model models/weapons/w_bullet.mdl not found and models/error.mdl couldn't be loaded

Sometimes a different model is missing. I'd really like to get to finish EP2 this time (last time my computer got a virus and I couldn't finish it.). I'd appreciate any advice. Thank you for your help.

 

[99.vikram]

Validate the integrity of your game's local content through Steam.

 

[floaterbo]

already did. There's been no change.