In the GoldSrc engine used by CS 1.6, .wad files are "Where's All the Data" archives that bundle textures and graphics. While gfx.wad handles the interface, other WAD files like halflife.wad or cs_dust.wad contain the actual textures used to build specific maps.
Uninstall the game and delete any leftover folders (especially the cstrike folder) before reinstalling to ensure no corrupt files remain. gfx.wad cs 1.6 download
Once you have downloaded a legitimate gfx.wad file, follow these steps precisely: In the GoldSrc engine used by CS 1