some of the older jet black macs are having problems with the display cables wearing out over time. i hate to say it but the best option is to just replace the screen
Have you checked the Ifixit store? Because if it is not there, you might want to check ebay for the part but make sure that the seller has good feedback.
What about the keyboard?
Thats So Funny!
You can put clear tape over it. it works.
Do Not Worry. The Islack comes seprate. This guide shows you how to remove the front screen with a normal suction cup.