Unhappy [Q] Samsung SCH-i589 Shows Only Download Mode Screen

Hello Friends I am New To This Forum Hope Someone Will Help me I Have my uncle's Samsung SCH-i589 and the Problem is that phone has stucked on the download mode screen. The Mobile Starts but only shows the samsung Logo and When The (Volume Up + Power + Home Key) Are Pressed It Goes To The Download Mode But Doesnt Start.Please Help Me I Badly Need It.