MD5 HASH: FILENAME: 9FEB5A3EF6221B3C25BC2322E4841013 HS_CD1_2015_SEPT2.ISO DF3AF3A932F0D4B3096431B12C01247F HS_CD2_2015_SEPT2.ISO B96AFD6103B772B39CDE3AE4E8D7C602 HS_PC_CD_2015_SEPT2.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.