mysql is not recognised as an internal or external command,operable program or batch

Simply type in command prompt :

set path=%PATH%;D:\xampp\mysql\bin;

Here my path started from D so I used D: , you can use C: or E:

MYSQL_HOME variable value:C:\Program Files\MySQL\MySQL Server 5.0\bin %MYSQL_HOME%\bin

See the problem? This resolves to a path of C:\Program Files\MySQL\MySQL Server 5.0\bin\bin

MYSQL_HOME:

C:\Program Files\MySQL\MySQL Server 5.0

Path:

%MYSQL_HOME%\bin;