during the mid week madness sale on steam i purchased portal and portal 2. I ran portal and got up to testchamber 10 and all the textures are missing and everything is wrong and broken:
I updated my graphics driver for my nvidia geforce gt220 and reinstalled portal, this problem still occurs. any help would be aprecieated thanks.
Best Answer
In your Steam Library, Right click on Portal and select "Properties." In the following menu, go to "Local Files" and select "Verify Integrity of Game Cache..."
If this doesn't work, you may have to "Delete Local Content" and then re-download the game.