iMac weirding out

[markodave]

Yesterday this (photo attached) has happened as NY daughter was using he computer. I tried to reboot the system but it seems like a technical problem.

Its a 27" iMac, about 6 years old. Running the latest iOS system (forgot the name).

Any insights on the subject, anyone.. Please..

 

[Julien]

That is the problem. You should not install iOS on a Mac.

Actually wrong forum, but it looks like it might be the graphs card.

 

[mediachicken]

Yeah I would definitely suspect a graphics card issue. Did you try a NVRAM reset?