Ah, Tweak UI.... you using that??? It's known to turn off the rt click start options. Open the Tweak UI control panel. Click the My Computer tab. Every disk drive letter you see listed in that window should have a check mark beside it. Scroll through and place a check mark in every empty box and then click the OK button. Reboot your computer, and when you right-click your Start button, you should find the Open and Explore menu items fully functional.
If you argue with an idiot he will drag you down to his level and beat you with experience.
I am not a fast writer.
I am not a slow writer.
I am a half-fast writer.