The "black video" phenomenon is caused by having "hardware acceleration" enabled on your PC.
How to disable hardware acceleration:
- Right click on your Windows desktop.
- Select Properties in the pop-up menu.
- In the Display Property window click Settings, Advanced, Troubleshoot.
- Move the Hardware Acceleration slider to NONE.
- Click Apply.
- Click OK in the message box displayed by the video card.
- Click OK to exit
Give this a try, and let us know if you have any other questions.