System Environment Variable

1. Go to Control Panel

2. Click System

3. On left hand pane click "Advanced system settings"

4. Make sure that the Advanced tab of system properties dialog is in view

5. Click "Environmental variables..." button

6. Go to System variable section (variable in bottom pane)

7. Open Path variable and add the path as shown in the following image

Note: If the permissions are not enough to update "system variables", please update "Path" from "User variables".