how can upload libronix again when i buy new computer?
You can do a fresh install from here: http://www.logos.com/support/downloads/ldls and then manually copy all of your user files to the new install.
OR, this process can be used to copy an existing installation to a new computer: http://community.logos.com/forums/t/3374.aspx
Hello, Steven, welcome to the forums.
You can find Libronix (or Logos 3 as it is sometimes called) at the following link: http://www.logos.com/3/support
That brings up the following webpage. Just click the link.
Every blessing
Alan