Are you talking about the Organizer or the Editor? In either case, with Elements 2021, you must save the .heic file in a different format, as Elements for Windows cannot save a file in the .heic format.
Are you able to actually view the .heic files? If not, install or reinstall the HEIF Image Extensions from the Microsoft Store.
If the files could be rotated OK just before you updated the graphics drivers, try resetting the preferences files. In the Editor, go to the Edit>Preferences>General tab and click the Reset Preferences on next launch button. For the Organizer, immediately after launching the program, press Alt+Shift+Ctrl. A message should pop up asking if you want to delete the Settings file. Answer OK.