Just 'upgraded' to Win10 from Win7. I have Office 2010 on this laptop. In Office apps (Word, Excel) Alt-Tab to switch between apps doesn't work as before. Now I have to hit Tab twice to go to another app. And, if I have 3 or more apps open, it's not consistent as to which one Alt-Tab(twice) goes to. Have to really watch the window that pops up with Alt-Tab. Non-Office apps, like Notepad and Paint, work as before, Alt-Tab (once) swaps between the last two apps opened. What gives??? is there a fix (other that buying a new Office suite)?