Green Screen

[Friend]

I was working on my iMac (sunflower version) and my screen changed to have a light green hue. I can't seem to fix. I have restarted. I have restarted and used option, apple, and "p" and "r" keys. Has anyone ever had this happen to them?

 

[barr08]

I was working on my iMac (sunflower version) and my screen changed to have a light green hue. I can't seem to fix. I have restarted. I have restarted and used option, apple, and "p" and "r" keys. Has anyone ever had this happen to them?

My old iMac, which i have since given to my mom, has a blue tint to it. I think it is unfixable by common hands .