How to reset Photoshop preferences (In Windows):
- First, hold down all three Ctrl+Alt+Shift buttons
- Now “while keeping those button held,” simply open Photoshop or a file that opens with Photoshop
- As Photoshop loads, you should get a prompt asking if you would like to “delete the Photoshop settings file”, Click yes
You should now have a fresh slate with all of the settings returned to their default.
Note: I have found that this process is kind of finicky and doesn’t always work. I have had the best results pressing Ctrl+Alt+Shift and clicking the photoshop shortcut from the start menu in Windows.