I bought a Dell Latitude D410 with Ubuntu on it, thinking i could learn Ubuntu that way. I successfully updated to 12.04. I have since tried to update to 14.04, but I don't know if i succeeded because what prompted the second update was the machine's sudden decision to boot to a black screen from which right clicking allowed me to start a terminal window or a web browser, but nothing else. Now it's even worse. All i get on the screen is the date and time, correct, but not terribly useful. Any help anyone could offer, i will appreciate enormously.