Only that it doesn't sound like a PSP X2 specific problem - is your title bar (that's what the blue frame at the top is) missing on any other programs?
I did a quick Google and the common suggestion was to do a system restore back to a time when it was working. I've never done one myself, so I don't know how well that works. Usually when something like this happens it's caused by something else, installing a new program, or picking up adware/viruses, and it just makes things go wonky.
I'm sorry I haven't got a "proper" answer that will solve it immediately
