While Windows 7 is a legacy operating system, getting CS 1.6 to run perfectly is still possible with a few targeted tweaks. Here is a comprehensive guide to getting your server browser back to work. 1. Run as Administrator and Compatibility Mode
Download and install the (both x86 and x64).
Right-click Counter-Strike in your Steam Library > Properties > Local Files > Verify integrity of game files . Steam will automatically redownload any missing DLLs.