Uinstalling and reinstalling visualcode won't reset your settings or remove your extensions.
To do a 100% fresh restart with visual code, you'll have to uinstall VS-code and remove some directories from your system.
These are all the standard places wher VS-code store files:
Storing extensions: %USERPROFILE%\.vscode
Storing backups, cache, settings, etc.: %USERPROFILE%\AppData\Roaming\Code
Default installtion folder: %USERPROFILE%\AppData\Local\Programs\Microsoft VS Code
Note: %USERPROFILE% = C:\Users<user_name>
Do a normal uninstallation of VS-code and then check to manually delete the above directories, if you want a full reset for the next time you install Visual Studio Code.