Tip: here is another simple way to open the steam root folder. press shift del to permanently delete all these temporary files.
in the following file explorer window, select all items by pressing ctrl a. Type %temp% in either the run command box (windows key r) or the windows search bar (windows key s) and press enter. The application load error 5:0000065434 is an error which appears after starting up a steam game and it prevents you from playing it at all.