This tutorial helps you how to check the files with the CRC32.

STEP 1 -Click here and download the zip file called CheckCRC.zip.
STEP 2 - Extract in whatever place you liike.
STEP 3 - Execute the .exe file.
STEP 4 - Select a file whatever you want(clicking a "Select File" button).
STEP 5 - And now it's checked a CRC32 file!

Hope this helped for you.