problems with programming my arduino mega 2560

hey there,
i have problems programming arduino mega 2560, gives me error :

code: [select]

avrdude: stk500v2_receivemessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating programmer
i googled , found it's bootloader problem
so rebooted bootloader, weird thing after burning bootloader board accept programmed once !!
and gives me same error
when burn again works again 1 time
this silly right ?!
i think thing wrong, guys
any ideas what's going on ??

quote from: khalid_easa on apr 27, 2015, 09:55 am

the weird thing after burning bootloader board accept programmed once !!

that classic symptom of auto-reset circuit not working.  if nothing usb connected arduino mega 2560 is probably hardware fault.  you should return bought working one.

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