Grid disappears

Why is it that the grid disappears in some view and the position of the view is slightly off.is there any way to reset the view’s.It is very annoying when trying to do a detailed model.Thanks

The grid in the 3D window only goes a certain distance, which can be edited via View > View Properties. Pressing 1, 3, 7, 5, and 0 on the NumPad change the view to front, side, top, orthographic/perspective, and camera respectively.

-Laurifer

The grid only appears in Top, Front or Side views. When you move the viewpoint, only a floorgrid will be visible. To switch to Top/Front/Side view press 7, 1 or 3 on your numpad.