Login page doesn't work

After the installation (quick start) the login page does'nt work (both with correct or wrong password..)

http://test.fiemmestampa.it/administrator/index.php

Quickstart works fine in my local installations so i assume something went wrong somewhere in your installation or problem is hosting related...

You have to test few theories to minimise error list as this could be caused by a lot of reasons. Few are wrong php version, unsuccessfull uploads, corrupted files, corrupted database tables , cache, host settings etc.....

Clear your browser cache first...
Try uploading your files again ..........
Try creating a new installation in different directory with same database....
Try creating a new installation in different directory with different database...
If you have a local server download a copy of your installation to your local server and test so that files do work and possible hosting problems....