Uploading.........

hi guys i am using Arduino Mega2560 . And basically when I am uploading a program blink then it is showing uploading...... which lasts for a long time but the result is same.
View attachment 30285

and also in error stage it is showing
Build options changed, rebuilding all

Sketch uses 1,518 bytes (0%) of program storage space. Maximum is 253,952 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 8,183 bytes for local variables. Maximum is 8,192 bytes.
avrdude:...

Uploading.........