This is not Adobe nor Washington DC. We are Premiere Elements users trying to help other Premiere Elements users with their Premiere Elements workflows.
If you would like assistance with your Premiere Elements 12 program, we would be glad for the opportunity to assist but we would need details beyond "...won't work!!!..."
What computer operating system is your Premiere Elements 12 running on?
In what way will it not work...
a. You click on the desktop icon and nothing happens?
b. You cannot open a new project or an existing project.
c. The program crashes when you are editing in the Expert or Quick workspaces
If it is a matter of failures after media import, then we get to the details of the project preset and the properties of the source media.
Then there are the classical questions
a. Do you have the latest version of QuickTime installed
b. Are you running the program as Run As Administrator and from a User Account with Administrative Privileges
c. What do your computer resources look like
If you want to deal with Adobe via its Adobe Chat, please use the following link to discuss your Premiere Elements 12 problems and, if within 30 days of purchase, ask for your money back.
After the link opens
a. Decide what you want...I preset it for "Orders, Refunds, and Exchanges"
b. Click on the statement "I still need help." to bring up Adobe Chat.
If you decide you want to troubleshoot your Premiere Elements 12 here, we will be looking forward to your follow up with details.