sanjayjjjj said:
Nothing is visoble on screen except blue color screenin ubuntu 12.04 and if tried for boot settong nothing is visible my mail id ****************@rediffmail.com
We need more info.
Did this begin after you installed Ubuntu?
Did Ubuntu run OK from the DVD or flash drive?
Is there another system on your computer or is Ubuntu on your entire drive?
What laptop do you have?
Without those answers I'd suggest that your installation didn't complete and you should try again.