PHP启动:无法在Windows上加载动态库

This Problem is similar to this one but the answer couldn't help me.

I am trying to get the imagick extension working but I always get the error

Unable to load dynamic library 'C:\PHP\ext\php_imagick.dll' - Impossible to locate the specified module. in Unknown on line 0

in my php.ini i configured my extension dir to

 extension_dir = "C:\PHP\ext"

The extension is set:

extension=php_imagick.dll

The file is in the folder C:\PHP\ext of course and named correctly.

I am using PHP Version 5.6.4

What could be the problem?

do you have the C:\PHP\ext\php_imagick.dll file on your computer ?