I have never had this problem before, does anybody know why the models turn up all black? Lights works on anything else…

I have never had this problem before, does anybody know why the models turn up all black? Lights works on anything else…

Please, does anybody know why this is happening?
I have tried regular lights as well as non linear but there is no difference…
Don’t bump. If people didn’t know before, they won’t know now.
However, I think I may have seem something similar to this before. Try searching the forum.
Thanks FireFly!
I did search the forum prior to posting but did not find this topic at that time.