Originally Posted by radamsiii
Never heard of it but the ImgBurn software did verify
That verifies the fact that the contents of the media match the contents of the .iso file stored on your local hard drive.
The MD5 process verifies that the .iso file stored on your local hard dive matches the .iso file constructed by the original author of that file. Mainly it tells you whether your web browser (or ftp program or whatever) left out a chunk during download, which they tend to do on super large downloads.
I once found an MD5 checking program for windows, but couldn't find it again when I needed it. Then I realized I had one in cygwin, so I didn't need a stand alone MD5 program in Windows. MD5 checking is simpler in Linux, so experts telling you to chek the MD5 generally skip the fact that in Windows you need some searches to find out how to.
When I downloaded the liveDVD .iso file I had to use the bit torrent installed on my son's computer, because the direct ftp and http methods of downloading each stopped after a small fraction of the file (and I was too lazy to figure out how to install bit torrent on any of my own computers).