Is your MacBook's screen completely black for no clear reason? There are several ways to potentially fix this issue, including some workarounds.

How to fix 4 common Macbook problems Don’t run to the Apple Store before trying these simple steps.

Apple claims they have nano-textured screens, but the same process applies to your average MacBook screen. Dampen the cloth with a mixture of water and 70% isopropyl alcohol and wipe away.