Settings going back to default when closing

Hi!
I'm working for several years with Elements 10 on a Windows 7 machine that is also several years old. Lately, every time Elements 10 closes and I open it again, my settings are gone. For example, (1) I don't use the project bin, (2) I have floating images (Edit, Preferences, General, etc. . . . ), and (3) my Unsharp Mask setting is 10%, not 50%. Naturally, resetting those every time is no fun.

What am I looking for?

Thank you,

Bernard