failed uploading to board arduino uno r3

hi...
i`m new to this arduino. i recently bought an arduino uno r3 as many of the people said that it is best for begginers. the problem is that when i plugged in the board to my computer the power buttons turn on and the led in the port 13 blinks continuosly. I installed the recent arduino 1.6.5 and the device is also installed correctly.

i just left it and tried to upload the basic blink program. I got no errors were i complied it. when i click upload it takes long time and at last it gives an error message "problem uploading to the board"..

here is the log of the error messages i got when i uploaded it

log.txt (1.68 KB)