Is there a way to find out when an account signs into the CiviCRM admin panel and edits something. Specifically I am looking for the person who changed a price field. We're using Joomla with Civi.
Logging was not turned on
If you have logging switched on you should be able to find this in the log tables. If you do not have logging switched on I do not think you can find this.
You can check your logging at Adminster>System Setting>Misc (Undelete..........