I'm not really sure what to do about this, nor has it ever happened to me before.
I have an All-In-One that I got about 6 years ago and have never had this problem.
I just made a big move from Al to Mi and I started my PC in a room of my new place---everything was fine. I turn it off and take it downstairs to set it up (2 hours later) and when it turns on my Aero theme is replaced with the classic theme. I open chrome, and the icon looks like this in the taskbar. Everything is like new, and it asks me to sign into my gmail (which I did). My bookmarks are gone, as it only shows the ones from my phone. My history is gone save for that from my phone too. It hasn't posed much of a problem as far as running--everything runs fine. But I do like to have my most used programs on the taskbar, so I just tried to set them up again--no luck. I hit the "Lock the Taskbar" button to try to unlock it because it was checked--No luck. I go into properties and uncheck the box, click apply, then ok. Nothing--Still can't pin items or unlock taskbar. Everytime I reboot, it resets the theme, but the new bookmarks I set are still there.
Anyone know what's going on?
(Bonus points if you know enough about Vizio All-In-Ones to help with a driver issue.)