The Ugreen hard drive enclosure is just a box that you have to put in a HDD or a SSD. Without a HDD or a SSD you won't see anything on your computer....
You should do it yourself or change the PC repair shop you're using. They don't know what they are doing and have already made your computer un boot...
If the HDD started doing crackling sounds it is a advice it is dying. Backup all your data on an external drive.
Replace the HDD with a SSD. It will...