Error: avrdude: stk500_getsync(): not in sync: resp=0x00

Hey i'm a newbie with arduino.
I just tried uploading a sample program and it showed this error:
avrdude: stk500_getsync(): not in sync: resp=0x00

I even went to the device manager and installed the arduino driver but even after this it showed the above error.
Can anyone please tell me what it means and how to go about solving it?

What model of Arduino do you have?

Please see this discussion
http://arduino.cc/forum/index.php/topic,28223.0.html

i have Arduino Uno R3

Hi Nitish,

were you able to get rid of this problem ?