Cant upload to my Arduino Uno

I get this error message when i try to upload the 'hello world':

Binary sketch size: 2652 bytes (of a 32256 byte maximum)
C:\Users\Am\Downloads\arduino-0022\arduino-0022\hardware/tools/avr/bin/avrdude -CC:\Users\Am\Downloads\arduino-0022\arduino-0022\hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega328p -cstk500v1 -P\.\COM4 -b115200 -D -Uflash:w:C:\Users\Am\AppData\Local\Temp\build5082855271981312750.tmp\HelloWorld.cpp.hex:i

avrdude: Version 5.4-arduino, compiled on Oct 11 2007 at 19:12:32
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/

System wide configuration file is "C:\Users\Am\Downloads\arduino-0022\arduino-0022\hardware/tools/avr/etc/avrdude.conf"

Using Port : \.\COM4
Using Programmer : stk500v1
Overriding Baud Rate : 115200
avrdude: ser_open(): setting dtr
avrdude: Send: 0 [30] [20]
avrdude: Send: 0 [30] [20]
avrdude: Send: 0 [30] [20]
avrdude: Recv:
avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: Send: Q [51] [20]
avrdude: Recv:
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

avrdude done. Thank you.