I am upgrading from 11.10 to 12.04 using the Update Manager.
With about 35 minutes left in the "installing" phase of the upgrade, the screen went black, mouse and keyboard dead. Do I need to make a new installation from an ISO CD? If yes, should I use the 12.04 issue of Ubuntu.
I think you should do a new installation by downloading a 12.04 issue from Ubuntu, burn it to a CD or if you have windows use LILI usb creator program (which is freely available) to create a USB bootable disk and do the installation