Arduino Uno R3 cannot upload sketches

Other Hardware 3rd Party Boards
1

Hi,

When I bought my arduino everything was good. But then I got some problems. I cannot upload my sketches. I tried to press reset and re plug my usb and It was run. But now I update the last version of Arduino 1.6.0 and I get this error

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xe0

I try in different computers, one is XP, and the other is Windows 7. What I have to do. Is my arduino broken ?

2

XXXX avrdude doesn't print that message when programming an Uno (it doesn't make 10 attempts!)
XXXX You probably have your "board" set wrong (ie to a MEGA.)
XXXX (I think 1.5.x/1.6.x will not pick up the last board setting from 1.0.x)

(oops. Never mind. I'm wrong.)

3

Tools>board>(your board name)