To check the files using the command prompt, download the program sha256sum.exe available from http://www.labtestproject.com/files/win/sha256sum/sha256sum.exe. If you have any problems accessing sha256sum.exe, you can try to grab md5sum.exe from http://etree.org/software.html. If you have downloaded md5sum.exe be sure to substitute for the correct tool below.

The sha256sum.exe program computes and displays hashes. To use it, save sha256sum.exe to the same directory as the ISO files. Select Run... from the Start menu and then enter cmd for the name of the program to start a Command Prompt window. Then change into the download directory. Run sha256sum with each ISO file like this:

cd "C:\Documents and Settings\Owner\My Documents\My Downloads\Fedora"
		sha256sum.exe Fedora-18-i386-DVD.iso

The program takes some time to complete, since it must read the entire ISO file.

Open the file CHECKSUM with a text editor, such as Notepad, to display its contents. Make sure the hash displayed by sha256sum.exe for each of the downloaded ISO files exactly matches the corresponding hash in the CHECKSUM file.

If all of the hashes match, you can burn the ISO file to disc. If a file does not match, download it again.