Hi Ibone! Thanks for you answer.
The guide you provide me in the link is not useful in my case because I cannot access to my wordpress. That's the problem really, that I cannot access to my wordpress account, so I cannot export or import the content through All-In-One-WP-Migration.
The only way I can access to a wordpress is downloading Bitnami again and starting a new installation, but then that new wordpress runs completely empty and new.
I have my user name and password right, but don't know how to enter to the site I was developing. When I open the "Bitnami WordPress Stack" (manager-windows.exe), in the "Manage Servers" tab appears both MySQL and Apache Stopped in red light. With a new fresh installation it appears in green, but the content is not there.
I've tried to copy and paste the wordpress file included in "Bitnami/wordpress/apps/wordpress" into the same folder of a new installation of Bitnami, but then in the web it pops "Error establishing a database connection", and if I go to wp-admin the message error expands and tells me why this error could be ocurring.
In my original wordpress installation, if I click in "Go to application" an error pops up and doesn't let me go any further: "Servers not running. The application does not seem to be running one or more servers are not currently running. Would you like to start the required server."
This is the number that gives me the Bitnami Support Tool in my windows computer, were I was originally creating the website, witch corresponds with my original wordpress installation:
Thank you very much for your help, much appreciate it!