I bought one last week in Boston and today in my house in Argentina I could used it. But.....SURPRISE! My screen shows a "black rectangule" on the bottom, almost a 1/3 of the screen. I put a MP3 CD, VCD disk, but ALWAYS the black rectangule is there!! Anybody knows something about this? I no have any idea!! What can I do! pleaseeee HELP ME!!! thanksssss.