Question Please help me!! all my file goes to .dalle file

Yep, looks like ransomware. Options are format, reinstall and restore data from backup or pay the ransom and hope they give you the encryption key.
 
You'll have to restore from a backup that has not been infected. Offline backup or a cloud backup. Also most of these are caused by failing to apply updates(mainly os updates), so in the future make sure you keep things up to date.
 
You'll have to restore from a backup that has not been infected. Offline backup or a cloud backup. Also most of these are caused by failing to apply updates(mainly os updates), so in the future make sure you keep things up to date.
i hope have another way to decrypt ransomware files... huhu