Naturally Speaking Dragon opens and then says it has to close after 90 seconds. You are unable to use this program. You have reinstalled it several times, only to have same thing happen.
You have checked Control Panel in Microsoft Windows to make sure that program is installed. Nothing works to keep it open. You can download and install service pack 1 for Dragon 10 from their support downloads page.
Select a "Click here to download" link to access correct download. Please read description for that service pack before you install it to make sure it's compatible with a version of Dragon you have installed. This tip was written for Windows XP operating system.