Try this Exit elements Hold down CTRL, Alt, Shift while restarting elements you should get a pop up that asks if you want to delete the settings file, say yes the editor should restart.
You may have to try again if you do not get the keys all held down long enough. Tina B
Make sure you hold the three buttons down all at the same time and hold them down until elements loads I had to try it three or four times before I could get it to work. Tina B
Restart Elements & hold <Shift> when you see the white Adobe splash screen; keep holding it until you see a "Building Artwork and Effects..." progress bar.