My screen went black this morning and I couldn't get the screen to reappear. I turned the power off, then waited a minute or two before turning it back on. My usual screen with all the apps was gone and replaced by a generic "windows" screen. I had to re-enter all kinds of information and I'm finally able to see my bookmarks, but all of my documents and pictures stored on my computer are completely gone. Did Mozilla/Firefox perform an update? And if so, how do I get back to my personalized screen - and more importantly my stored documents and pictures?!!