This is something you need to do some studying on. There are several ways to extract
cab files. It's not for troubleshooting but is generally used to replace missing
or corrupt files.
You can use System File Checker to extract files, extract files from DOS, you can
even use a batch file to extract. You can install Windows from them, CAB install
files, is what they are.
Copying/Extracting From .CAB Files
Extracting CAB Files