jose_rui_sa wrote:- now your databases are missing?
If this is the case, your problem could not be solved.
The mysql databases are all in the xampp\mysql\data folder. You have backuped the whole xampp folder, so all your mysql databases too.
If they are missing after copy the folder back, i have no idea whats going wrong there, sorry.
Either your backup was uncomplete, or you don't have copy your backuped xampp\mysql\data folder back, or you have done something else.