To Reset the Border
Using Reset Border on the Views menu, you can set a new border defining a view.
1. Click 2D Views on the LEGACY DWG menu.
2. Click Reset Border on the VIEWS menu.
3. Pick a view. The view highlights in red.
4. Click to pick a location from where you want to start the view box.
5. With the rubberband box attached to the cursor, extend the box as necessary and click again.