Hi

Do you have a backup of your profile from your old hard drive or your data stored in Firefox on another device?

No. Old hard drive is gone. I was told all the data is on the new hard drive.

This will help if all your data has been transferred or copied to the new drive.

https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data

You weren't previously using MSIX Firefox from the MS Store as that version has the profile folder in a different location ?

• https://support.mozilla.org/en-US/kb/download-firefox-windows-microsoft-store

See also:

• https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update

Primary location used for the main profile that keeps your personal data (Root Directory on about:profiles).

• C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile>