Go to My Computer => Local Disk(C:) => Program Files(x86) => Git => cmd
Right Click the git => Select Properties
Under the location Copy the text eg - C:\Program Files (x86)\Git\cmd
Come back to the Desktop
Right-click My Computer
Select property
Open Advanced
Click Environment Variables
In the System variables Find the Variable call Path
Click the variable
Click the Edit Button
Select the Variable value Text Box .
Go to the edge of the text and put semicolon(;)
Then Right-click and press Paste
Press Ok