Windows 7 Oh boy, power trouble... What now?

Experiencing a black screen that quickly returns to normal can be quite disconcerting, especially when it's related to the USB Root Hub. It's a good idea that you disabled the USB setting under the power plan as a potential solution.
If the issue resurfaces or if you encounter any more problems, feel free to return to this site for further assistance. Hopefully, the problem is now resolved, but if not, don't hesitate to seek additional help. If you have any more details or questions about this issue or any other tech-related matters, feel free to share them here!