I suspect it may have something to do with your monitor settings. Go to the control panel and check dpi scaling under Appearance or Display.
It’s not uncommon to see a setting of 125% or higher to improve screen readability but PSE requires a dpi of 96 or 100%
Whilst the Editor Menu will appear at 120% to 149% the Organizer Menu (and the advanced button in downloader) won’t. Sometimes the mouse or tool cursors are distorted.
Try a setting of 115% to 120% otherwise use 100%. A common display resolution, notably for notebooks/laptops, and netbooks is 1024 x 768 but PSE requires a screen height of 800 for full functionality. If your height resolution is out of the range 768 to 800 try experimenting with the slider/settings.