I installed Ubuntu 13.04 in my PC. I had Ubuntu 11.10 & Win7 before (that works together correctly).
I begin install after erasing all Linux partitions (with Ubuntu installer). after install and reboot, Ubuntu is not booting up now!
I have Gigabyte GT440 VGA and my main board is Asus m4a78t-mle that have onboard ATI VGA. When I don't use GT440 VGA (unplug the Card), Ubuntu 13.04 can boot with on board VGA, but with GT440 not boot, and presents a black screen with a lot of reports of Linux booting. thus hanging. what I should do now?