I upgraded from Ubuntu 11.10 to 12.04 using the update manager. At the end of the upgrade the console said the upgrade had failed and it forced me to restart. After a restart I am not able to do anything other than logging in. I just see a blue screen with the ubuntu one icon, I can open applications, but nothing beyond that. I opened the terminal but after that the keyboard is not being recognized. Basically the laptop is now rendered useless. Any pointers on how to recover?
This is on a Dell Inspiron 1501 laptop with a 64 bit AMD Sempron Processor.
Any help would be appreciated.