Sounds like something is corrupted with your KDE or GNOME, or they were not chosen on install time. I think you are looking at twm which it will default to if there is a problem. You should be able to right click and choose 'exit'. Then you will be back at the login screen. Hopefully then you can log in with username and password and get to a command line. Then try the command startx and hopefully that will get you to the desktop. You can also switch desktops by running the command switchdesk GNOME or switchdesk KDE depending on what you want to switch to. HTH Marc