Some weeks ago I had a problem on my pc with Qt MySql driver : here
I fixed this problem by copying libmysql.dl in my "executable" folder as suggested.
Now I have to migrate on another Pc where Qt are not installed.
I copied the executable and all the .dll dependencies in a folder on that Pc and I'm back to the initial problem. In fact the program run correctly, but when I try to connect to database I got the same message of "QMYSQL not loaded".
Any idea?