The screen is black and does not turn on

Hi everyone I ordered a display for google pixel 7 pro . Before this I had a non-original display which I removed and the phone worked with it . As soon as I connected the cable from the original Google pixel 7 pro display I saw just a green screen of noise. I thought I had not fully connected the cable and disconnected and reconnected it , then the screen is black and does not turn on . I do not know what to do in this situation.