What is your OS and version and LR version.
You may try uninstall/install of the latest version of LR (6.7).
If that does not help, trash your preferences. Recover catalog and images after resetting preferences in Adobe Photoshop Lightroom
Obviously, you need to know what your current catalog is and where to find it.
I uninstalled, reinstalled and did a system restore-neither worked. Is there a way to get live help?
I'm technologically challenged. Windows OS
You are sure taht you have LR6.7 installed? What is the error message? You did not mention the exact message?
What is your Windows version?
Crystal balls do not work for the moment!