HP all-in-one Envy23 switch to tv problems

Hi

When I attach a device with HDMI to my HP all-in-one Envy 23 and click on the left button to switch to tv the computer switches to tv. But the colors are complety wrong and I have no sound? The colors are all pink and it doesn't help if I play with the lightning or the others.
Is the problem in my device (Chromecast) are do I need to set-up something else?

Thanks
Sofie