MD5 HASH: FILENAME: 092c04246248e9d953ce8e308aa6dda1 HS_CD1_2013_JUNE4.iso 83251f0c076ea134ca6c9c9bf2eef791 HS_CD2_2013_JUNE4.iso cd0193c4ffe0b3ae0c16a1c77342766b HS_PC_2013_JUNE4.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_2011August10.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.