Ubuntu 12.04 boots to Busybox initramfs

[sandynice]

Hi,

I have Ubuntu 12.04. I installed kubuntu desktop in it using the command
sudo apt-get install kubuntu-desktop.
After the install, I restarted the system and it came up with this Busybox initramfs screen.. I typed "exit" on the screen and it gave me an error..

http://s21.postimg.org/yl67ixfzb/IMAG0055.jpg

How should I resolve this issue?

[dino99]

probably a ram trouble; so re-try to boot

[sandynice]

probably a ram trouble; so re-try to boot

tried many times. no luck