repair c p u startup

http://whatis.techtarget.com/

A command interpreter is the part of a computer operating system that understands and executes commands that are entered interactively by a human being or from a program. In some operating systems, the command interpreter is called the shell.

Generally in win95/98, you will find command.com at the root of the hdd (ie. C:\). It translates common commands into actions.... DELETE filename.ext, or ERASE, or COPY, etc. These are "commands" that the OS is programmed to interpret and take action on.