Trouble uploading to board

I have followed all of the instalation steps for the Arduino but when I attempt to upload a sketch it says "Problem uploading to board." The error message underneath aslo says:
"avrdude: stk500_getsync(): not in sync: resp=0x30
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

Does any one know what do do to solve this?

Make sure that the proper board is selected from the "Tools/Board" menu.