Everytime I open Ae whether its a project I want to edit or creating a new composition, nothing shows up, just a black screen. You can see all the keyframes and all my assets and a small preview of the compositionin in the Project Panel but it's not showing up in the actual Composition Panel. Pls send help!! I have purged All Memory and Disk Cache which worked and brought my composition back, but then once I closed Ae and opened the file again it was back to a black screen.
Your screenshot does not display the fast draft buttons et al which simply means your hardware acceleration is not working correctly. Update your system's graphics driver and check the relevant preference settings.
Could you share your system specifications (CPU, GPU, RAM)? As suggested by Mylenium, try updating your GPU driver. If that doesn't work see what happens if you switch to Mercury Software Only under the Video Rendering and Effects tab in File > Project Settings.
Note: Do not rely on Windows to update the GPU driver. I'd suggest doing it manually.