sterretje, I connected the servo to 5V pin in the Arduino board. It is powered by USB. I uploaded a program once in the beginning, after that I can't upload any other program, no matter what I do.
DrAzzy, I uploaded a program with servos in the 9th and 10th pin, power from the 5V pin, USB connection to Arduino. But only the 9th pin servo worked. I think the 10th pin servo's movement was like the seconds hand of the clock. Then I tried to upload another program thinking there was a mistake in the program, but it won't upload and only the 9th pin is working based on the 1st program.