the board doesn't respond

please help
when upload program got message

{avrdude.exe: stk500_getsync(): not in sync: resp=0x00}

i check every think like: *the board
                                              *the port number

i re-install entire software , driver , os !!
but same  problem & massage

i appreciate help
peace...   

read this 
there allot of solution in comments there don't forget check too

Arduino Forum > Using Arduino > Installation & Troubleshooting > the board doesn't respond

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