Window scaling issues on high resolution (4k) screens can cause problems like tiny text in the application or menu items that don't appear or panels that have scrambled text.
This blogger gives a method for telling Windows that an application is actually not DPI scaling aware.
http://www.danantonielli.com/adobe-app-scaling-on-high-dpi-displays-fix/
You can use this to fix tiny text in Photoshop CS5, Quickbooks or games like Lord of the Rings Online (LOTRO).
You can also right click on the icon and go to Compatibility settings and check the box for "Disable Display Scaling on high DPS settings"
If this box is greyed out, click on the change settings for all users button, and see if it's checked there.
Hopefully using one of these methods will fix the text and menus in your application so you can happily use your fancy 4k monitor.