I am on Windows 10 (which I regret!). Parts of my Premiere Elements 10 have disappeared. When I go into "Edit" The controls are shown but if I click on any of them e.g. Brightness, nothing happens. What is more, all of my scene menus have disappeared.
If I download and re-install, would that cure the problem?
What video card/graphics card does your Windows 10 64 bit computer use? See Device Manager/Display Adapters/.
Do you have QuickTime 7.7.6 installed on Windows 10 64 bit, and are you running the programs as administrator (from user account with administrative privileges)?
Let us start here and then decide what next. We will focus on the video card/graphics card depending on which one is being used.
Any questions or need clarification, please do not hesitate to ask.