MD5 HASH: FILENAME: 4C30ADA50E020C33E12CA8E5564B3E08 HS_CD1_2014_SEPT15.ISO 7455414AC31BF1878A1E94199AA1383F HS_CD2_2014_SEPT15.ISO F25F0D5EC1C3B8AC90CD1050840749DB HS_PC_2014_SEPT15.ISO There are many MD5 hash checkers available on the web. Some are GUI based and others are command line driven. They are available for all Operating Systems. As long as it uses the MD5 algorithm, any program should work. Here is the link to an open-source Windows MD5 checking program: http://md5deep.sourceforge.net/ Once you have installed it, use the md5deep.exe to calculate the hash - example - md5deep.exe HS_CD1_2014_APRIL30.iso You can then compare that string with the one provided above. Most programs like md5keep even allow you to check one or more MD5 hash strings from a file containing known hashes. Check out the MD5DEEP.txt file for more information.