Close IE, then in a Run window (Windows key+R), type rundll32 iedkcs32.dll,Clear (Clear is case sensitive, also note the space) and press Enter to remove branding.
Alternatively, to insert your own wording, e.g. your name, open a Run window (Windows key+R), type regedit, press Enter and in the left pane navigate to HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main. Look for Window Title (note the space) then right-click and Modify to change it. Alternatively, if it doesn’t exist go to Edit > New > String Value and name it Window Title, right-click it and type the title you want.