Math preview can't work

[CDPDisk]

As the picture shows,

ERROR: Failed to run 'pdflatex' to create pdf to preview.
I use MiKTex. Ghostscript should be included in MiKTex.
And the system check:

The packages for equation preview preview and mathtools are missing, but I don't know how to install them.

And another problem, I have added the ImageMagick to the path, but system check still can't find it. I have tried to restart my computer.

[CDPDisk]

I have installed the package in MiKTex. But the math preview still can't work and have the same error. And the ImageMagick is missing as well.