Dell monitors are not validated in a full dark room. Turn the lights on and post pictures of the BID colored screens (gray, red, green, blue, white) as well as the Windows desktop.

Thanks for your reply. I have lights on pics on the original post and everything is reset as you mentioned in other posts. I think BID black is the most direct way to expose the backlight bleeding. Let me know if you still need the other 12 pics for other color BID.

We do.