Arduino Due not working

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hi,

i have problem new arduino due. have not been able upload program.
connecting usb closest power connector results in power led (yellow) , l led (green) on. sure changed com port com9 no change.
uploading program result in 2 or 3 flashes of rx led , error in status window: "avrdude: stk500_getsync(): not in sync: resp=0x00"
i able succesful looptest (both rx , tx leds flashed on entering characters keyboard
i using windows 8.1 64bit laptop.
trying install driver comes ide results in "there no better driver found 1 installed"
processor on board atsam3x8 assume atmega328
trying burn bootloader resultsd in "avrdude: stk500_getsync(): not in sync: resp=0x00"
resetting board @ moment rx starts flashing did not solve problem, have run out of options.
i tried other usb (com4). same result except did not see rx led flash.
anyone idea? running out of options , forum not give me other clues.
 
roelof

same problem me green led on , yellow (l) led blinking fast please me i'm using  window xp  32bit (86x)


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