Problema al cargar programa en arduino mega

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hola, tengo un arduino mega2560 y trato de cargar el programa blink pero me da el siguiente error, en el ide 0019:
avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51
también descargue el ide arduino 1.0 y se queda colgado en la barra de cargando el programa y no lo da subido.
no sé qué hacer, reinstale unas cuantas veces los drivers y no funciona, leí en la página de arduino que el mega tiene una led l que se enciende al conectar para indicar que el bootloader está bien, pues en mi caso no se enciende, solo parpadea un poco el led rx cuando trato de subir el programa. saludos.



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