What do you mean; wiped out my computer ? Did you erase or format the hard drive? Did you reload Windows?

Hi Wrifintime, do you remember setting up a Firefox Account? If you set up a Firefox Account and the Sync service, then some of your Firefox data may be stored on Mozilla's servers. Otherwise, all data store is local to your system, and no one else would have a copy.

Did you do a Windows "Refresh" or "Reset" that created a folder named

C:\Windows.old

If so, you probably can get a lot of old program data out of there, for Firefox and other things.

For Firefox, you'll need to turn on viewing of hidden files and folders. See:

https://support.microsoft.com/en-us/help/14201/windows-show-hidden-files

Then you can explore up the path:

C:\Windows.old\Users\username\AppData\Roaming\Mozilla\Firefox\Profiles

Anything there?

Note: That folder gets deleted automatically after 28 days, so make time to go through it soon (or make a secure copy somewhere).