HDMI purple sting on TV transmission and Netflix?

my
1

I have a problem and when I connect my laptop to my TV the picture on the TV becomes purple. I have already changed my HDMI cable 5 times, bought an extra one all without success. However, when I open PowerPoint and start a slide show, the colors are normal! I can't explain it. As soon as I open Netflix of course with purple stitch and a movie z.b be given garkein image transferred only the subtitles. My connection to the TV and laptop are not kapput because if I connect a console, for example, the same goes for the laptop when I connect it with a projector at school. What should I
do?

Ch

Graphics card may be defect?