As a popular design aid, Cad must be used by many users. However, when some users opened the Cad software under Win7 system, an error message appeared: This program cannot be started. The computer is missing ac1st16.dll, causing the Cad program to fail to start. How to deal with this problem?

method

1. Right-click My Computer------Properties-------Advanced System Settings------Environment Variables;

2. Add an "Autocad" system variable, the variable value is: C: Program Files (x86) Common Files;

3. Modify the Path value. The variable value is: SystemRoot%system32;%SystemRoot%;%SystemRoot%System32Wbem;%SYSTEMROOT%System32WindowsPowerShellv1.0;C:Program Files (x86)Microsoft SQL Server100ToolsBinn;C:Program Files (x86)Microsoft SQL Server100DTSBinn;C:Program Files (x86)Common FilesAutodesk Shared

4. The modification is successful. You don’t need to restart the computer. Just open CAD directly. Success!

The above will introduce the solution to the problem that Win7 system fails to open Cad and prompts that ac1st16.dll is missing. You only need to add the Autocad system variable to the specified file on the C drive to solve the problem.