Hi Prabhu,
You need to install the language pack and change the default language from the Control Panel. In that way, you will be able to set English as your default language. For instructions, you can refer to the steps below:
- On the Start menu, type Control Panel, and then hit
Enter.
- Choose Clock, Language, and Region.
- Select Language.
- Under Change your language preferences, select Add a language.

- Browse or search for the language that you want to install. Select the language and then click
Add.
- Click Options next to the language you have added.

- Select Download and install language pack. When the language pack is installed, it will be available to use for the Windows display and speech language recognition.

- To make this language your default language, move it to the top of your language list.

- Restart your computer to apply the changes.
You may also check this link for reference.
Should you have further questions, let us know.