See the article at: [[https://support.mozilla.com/en-US/kb/Managing%20profiles?s=moving+profiles&as=s]] It will help move your profile to your new PC. Also, this other article will give you more information about profiles. [[https://support.mozilla.com/en-US/kb/Profiles?s=moving+profiles&as=s]] At the same time you can also go to Tools|Add-ons|Plugins and click on the <Find Updates> button to insure that you have the latest plugins installed. A good way to start things out with a new PC.