First step: Try to:
So that you are prepared for subsequent steps. Be sure to place your backups in a safe location - on an external USB drive, for example. You might also create a specific location on your Windows OS machine, for such backups . . . something like a folder:
C:\BraveBrwsrBkups
That directory (folder) is easy to create and to locate, and also out of the paths of Brave Browser installation parts/pieces.
After backing up such data, then consider:
Clearing cache, cookies, etc.
Sometimes, the following two steps, are sufficient to get Brave Browser running properly.
With BB not running, delete the ‘Caches’ folder, and delete the ‘Cookies’ file.
Caches (folder):
%LOCALAPPDATA%\BraveSoftware\Brave-Browser\User Data\Default\Cache\
Cookies (file):
%LOCALAPPDATA%\BraveSoftware\Brave-Browser\User Data\Default\Cookies
Or, you could:
Clear cookies, cache, history, etc.
In a Brave Browser New Window, go to:
brave://settings/clearBrowserData
Select the Advanced tab
Set Time range to “All time”
ENABLE everything except:
- Passwords and other sign-in data
(Myself, I would NOT make that exception)
(because I would have a backup prepared.)
(In other words, be prepared.)
Click on the “Clear data” button
Report back here, the status: Running same? Better? Worse?