Error with ImageMagick version

[igue]

Hi,
I have to install Image Magick on Windows 7 Professional.
Surfing the internet I found out that the version I need is

ImageMagick 6.8.9-1 Q16 x86 2014-05-08

I did not found the version I need, so I have downloaded and installed the version 7; When I look into the module details in the phpinfo, I see

ImageMagick number of supported formats: 0

and

ImageMagick supported formats: no value

When I try to use it with PHP, I get

Fatal error: Uncaught exception 'ImagickException' with message 'unable to open module file `C:\Windows\system32\config\systemprofile\.magick\IM_MOD_RL_png_.dll': No such file or directory @ warning/module.c/GetMagickModulePath/812'

I found out that I do not have the directory.
Reading on forums (such as StackOverflow and simlars) I discovered that the version of ImageMagick that I have is too recent for the IMagick extension.
Note that I can't install a newer version of IMagick because it can't work with the actual server configuration.
So I suppose that I have to install an older version of ImageMagick (the one I have mentioned before); the problem is that it can not be found on internet.
Does anyone know how can I resolve this problem?

[snibgo]

Perhaps the latest v6 version, v6.9.8-3 will do. See http://legacy.imagemagick.org/script/bi ... hp#windows