Full restore wont work

Two weeks back my HA had crashed due to a power failure, I did not get a chance to fix/restore due to work commitments. The UI wont show up… but it looks like the backup always worked, as i do have backs for the last 10 days.
Anyways as i was not able to get the UI to show up, i re-installed HA, and made sure i had access to the new UI, and used the 10 day old backup to restore. The restore completes, and now its the same story, i cannot see the UI.
I used to think the backups are not of the OS, but only of the data.