problem uploading to board

I hope someone can helpme with this problem

I was just about to upload a sketch to my arduino uno but when i conected the USB cable to my pc it make a sound of a device was conected, on the device administrator appears the arduino uno, on the IDE shows my port and board correctly but on my board the led PWR stays off

and when i try to upload my sketch i get an error with my board showing this:

Arduino:1.6.5 (Windows 8.1), Placa:"Arduino/Genuino Uno"

Sketch uses 1,162 bytes (3%) of program storage space. Maximum is 32,256 bytes.

Global variables use 17 bytes (0%) of dynamic memory, leaving 2,031 bytes for local variables. Maximum is 2,048 bytes.

Error abriendo puerto "COM3" (Port busy)

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x88

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x88

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x88

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x88

Problema subiendo a la placa. Visita http://www.arduino.cc/en/Guide/Troubleshooting#upload para sugerencias.

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x88

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x88

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x88

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x88

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x88

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x88

This report would have more information with "Show verbose output during compilation" activala desde Archivo > Preferencias

I dont know what could happen, is it my arduino broke and if is this, how can i fix it

please help

...and sorry for my english

i too had a same prob how to fix it

When you unplug your arduino, does the COM port disappear from arduino software? If not, you need to install the COM driver.

Thanks and hi liudr, i tried re-installing the driver but still get the same error, i guess my board is broken because i just conected to another pc and still get the same code:

Arduino:1.6.5 (Windows 8.1), Placa:"Arduino Uno"

Sketch uses 1,006 bytes (3%) of program storage space. Maximum is 32,256 bytes.

Global variables use 15 bytes (0%) of dynamic memory, leaving 2,033 bytes for local variables. Maximum is 2,048 bytes.

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0xf6

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xf6

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0xf6

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0xf6

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0xf6

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0xf6

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0xf6

avrdude: stk500_recv(): programmer is not responding

Problema subiendo a la placa. Visita http://www.arduino.cc/en/Guide/Troubleshooting#upload para sugerencias.

avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0xf6

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0xf6

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xf6

  This report would have more information with
  "Show verbose output during compilation"
  activala desde Archivo > Preferencias

Do you think i can try something else?