I need a software that should be able to cut and join any video format.
I'm using Windows 7, and one software I got was not working with it.
Freemake Video Converter seems to do what you want plus a lot more. A software that supports "any video format" may be hard to come by but this supports quite a few.
If you want something to join files, check out SUPER (download link at the bottom where it says "Download SUPER setup file").
Don't be scared by the interface, it's a really good piece of software. One advertised feature is joining of format-identical files. As it's based on ffmpeg, it'll read and write almost every possible format.
You can't use it to cut files though, as it's not a real video editing software.