Since it only opens that black window I cannot tell what version, etc, but I think it is the current version in Windows 7 as of today June 21. Need to know how to reset it.
I have to use Task Manager Processes window to kill it because closing the window does not stop the browser. Then re-start goes back to same black window.
Finally, after several hours I again killed Brave from the Task Manager Processes window and then I could re-start Brave by clicking on the icon to see that it failed to reload the previous pages an it was again responding to normal activity.
I still think there should be some way other than waiting for hours…