If Adobe Photoshop is like other Adobe Crapoware, then it is likely to have
installed a totally unnecessary and incompatible third party add-in that has
broken Word. Test by starting in Safe Mode. From Start | Ruin (Winkey+R),
type in
winword /a
and press enter. If Word starts OK now, then you need to remove the Adobe
add-in (probably something in the Word Startup folder). But you'll get more
information if you try Adobe Support.