STEP 1:

  1. In Premiere Pro, go to File – Project Settings – General.
  2. Under Renderer, change to another option if available.
  3. Change the Renderer to “Mercury Playback Engine Software Only”. Click OK.
  4. If the screen is still black, delete the current transition and import one again.

If everything is still black, move on to the next step:

STEP 2:

  1. Go to Edit – Preferences – Media.
  2. Then check the Hardware accelerated decoding (requires restart).
  3. Restart Premiere Pro.