trouble uploading to board

hi i have an arduino nano which im having trouble uploading to. i keep getting the error

avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51
please help!!!!

Did you notice that there is the ability to search the forum for any of the other 800,000 posts asking this same question?

What of the steps on the Troubleshooting page have you tried? With what results?

where is the trouble shooting page?

http://arduino.cc/en/Guide/Troubleshooting
The error that you saw also contained, I believe, a link to the local copy on your computer.

If you search you will find literally hundreds of threads on this.

Escape4ever