Your tryinng to install WordPerfect on your new computer. It keeps telling you that your serial number is invalid. In order to install a Corel product that says there is an invalid serial number, you must either call or email Corel for instructions.
You can check out this Corel Support for invalid serial numbers. Depending on where you are in the world there are numbers listed for immediate support and an email tab at top of that page as well. Also, you can contact Corel Customer Service.