Quote - You need to change your viewport mode to what you prefer.  Right now you have it set on Bounding Box & that's why it's turning to little boxes when you move around.  Change it to texture shaded to see exactly what you have loaded as it is loaded.  :)

See the screenshot above.

 

Thank you for your help

I tried it, changed the viewport mode to texture shaded and it's still doing the same thing. It does it on all viewport modes.