Problem after update - screen only icon size

I've just loaded the latest update for 2017. Trados Studio Workben restarted as its should, but did not fill the screen. In fact, it only appears ina mini format when I hover the mouse over the icon on the bottom menu. I cannot bring up the programme at all so I can alter the size. I have tried restarting my PC (Windows 10 Pro, 16 GB RAM, i7 intel, and 64-bit, working with two monitors) but to no avail. I have also tried removing the Studio icon and starting Studio again, but the problem remains. The screen is only visible in mini-size when I hover the mouse over the Studio icon. Has anyone else experienced this problem after the latest update? Not a great start to Friday morning (or any morning come to that).

Andrew