HI ovenprooftripod , Actively syncing bookmarks will sync to newly attached computers. Do you have a back up of the computer or is it still accessible?

Currently Firefox Accounts is not a reliable back up.

The computer is not accessible at all. It appears my motherboard has blown. Looks like I have lost my bookmarks then =( Oh well

I am sorry to hear this, for future incidents I might recommend these back u/sync features around restoration when all else fails. (However I cannot gaurantee them because they are third party)

• This one might be helpful on a network share if you have a cloud data storage to store the backup outputs: https://addons.mozilla.org/en-us/fire.../backupfox/ or syncing the Firefox profile folder to one of these services that support the file types could be another option. (I do this with dropbox)
• Xmarks: https://addons.mozilla.org/en-us/firefox/addon/backupfox/ however in the past I think sync may not have worked at the same time.

If you have any other questions about this I am happy to help.

If the hard drive is still healthy then it might be possible to build the hard drive in an enclosure that allows access the drive via an USB port.

See also:

• https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile
• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox