Hello Harshini,
probably you have closed the windows. Have you tried to open them again using the commands from the menu WINDOW as shown below?

If the above commands don't helps and the windows are still not available, the workspace information is corrupted. In such case:
1. Exit Embedded Wizard Studio.
2. Open Windows Registry Editor.
3. In the Registry Editor navigate to following key. Note the right version of Embedded Wizard Studio you are using. In the following screenshot I'm using version 12:

4. Delete the key with the found version (e.g. 12).
5. Start Embedded Wizard Studio again.
I hope one of the above approaches helps you to solve the issue.
Best regards
Paul Banach