1 clic on any admin icon sends me to password page and back to admin page!

Try to shut down the pop-up blocking software, or Google bar (or some tool bar of the kind, often equipped with a function for pop up blocking)?

The mini-message do not function if the software blocks popups.

Possibly, on your PC, if you are using EasyPHP, MiniGuppY or EasyGuppY, your site does not launch if your antivirus and your firewall are active.

The firewall and antivirus should be configured to allow easyphp or easyphp to run. If this is not possible, they should be deactived, while running GuppY locally. This is a security risk if you are connected to the internet at that time.