Car stereo wiring. when my car stereo was installed in my car, i believe it was done wrong. When

Question

when my car stereo was installed in my car, i believe it was done wrong. When i turn on the car the radio doesn't come on right away. i have to physically hit the power button to turn it on. i also have to reset all of my radio stations. This happens every single time i start my car. Is there any way i can fix this? Please let me know.