Cannot upload sketches to Arduino Uno R3 -- avrdude: stk500_recv(): programmer is not responding -

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update: have been told (in first answer question) should install windows drivers atmega 16u2 chip onboard arduino. unfortunately, have been unable locate these drivers (i looking windows 10 drivers). appreciated. thanks!

i got arduino uno r3 board inland electronics atmega328. know has bootloader because has blink pre-uploaded; whenever plug in computer, pin 13 led flashes every other second. since have had it, have not been able upload sketches board.

i using arduino ide 1.6.7 on computer running windows 10 pro 64-bit. have researched problem , have been unable find fix, albeit trying can find. have been trying upload slight modification blink, make led blink faster. nothing connected board other usb cable computer. code compiles fine, well.

i begin sharing main error message have received, give additional information. error message:

arduino: 1.6.7 (windows 10), board: "arduino/genuino uno"  sketch uses 1,030 bytes (3%) of program storage space. maximum 32,256 bytes. global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes local variables. maximum 2,048 bytes. c:\program files (x86)\arduino\hardware\tools\avr/bin/avrdude -cc:\program files (x86)\arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -pcom3 -b115200 -d -uflash:w:c:\users\(my username)\appdata\local\temp\build9c9ef3bdfe2fccb480bc6e4bac749e41.tmp/blink.ino.hex:i  avrdude: version 6.0.1, compiled on apr 15 2015 @ 19:59:58          copyright (c) 2000-2005 brian dean, http://www.bdmicro.com/          copyright (c) 2007-2009 joerg wunsch           system wide configuration file "c:\program files (x86)\arduino\hardware\tools\avr/etc/avrdude.conf"           using port                    : com3          using programmer              : arduino          overriding baud rate          : 115200 avrdude: stk500_recv(): programmer not responding avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0xcf avrdude: stk500_recv(): programmer not responding avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xcf avrdude: stk500_recv(): programmer not responding avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0xcf avrdude: stk500_recv(): programmer not responding avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0xcf avrdude: stk500_recv(): programmer not responding avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0xcf avrdude: stk500_recv(): programmer not responding avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0xcf avrdude: stk500_recv(): programmer not responding avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0xcf avrdude: stk500_recv(): programmer not responding avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0xcf avrdude: stk500_recv(): programmer not responding avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0xcf avrdude: stk500_recv(): programmer not responding avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xcf  avrdude done.  thank you.  problem uploading board.  see http://www.arduino.cc/en/guide/troubleshooting#upload suggestions.    report have more information   "show verbose output during compilation"   enabled in file > preferences.

i have tried pressing reset button @ various different times in process, varying lengths of time, no effect whatsoever. more information follows:

  • all usb connections secure
  • the rx led flashes briefly after each "attempt"
  • all drivers date , installed
  • in device manager, arduino shown "arduino uno (com3)". no other com ports shown being used
  • i have selected "arduino/genuino uno" under "board" in ide
  • i have selected "com3 (arduino/genuino uno)" under "port" in ide
  • the programmer selected on installation of ide (and still selected) "avrisp mkll"

  • i have changed com port com4 resulting in: avrdude: ser_open(): can't open device "\\.\com4": system cannot find file specified.

  • i changed com3 resulting in: avrdude: ser_open(): can't open device "\\.\com3": access denied.

  • i uninstalled arduino software (after disconnecting board)

  • i followed steps reinstall on "getting started arduino" page on arduino.cc
  • i began getting original error again

i shared information based on other sites , questions have mentioned being fixes (none of them worked me).

i have heard of issue before. fix new usb a-to-b cable. can 1 $3-$5 on amazon.


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