Problem with my admin login

Hi everybody,

I have a wordpress site, over a year i never have one single problem with my site, but since yesterday, anything works !!!

When i try to enter to my admin panel, well… the login page displays perfect, i introduce my user and password, and when i login succesfully, in my desktop page i only see part of the php code of my admin page as html… i really try a lot of things but nothing seems to work…

Can anyone help me

Ty

Alberto Tapia