Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I installed Ubuntu 12.04 by replacing my Windows installation. Everything worked perfectly. Then it asked me to restart. I did, but it does not go into a selection menu or start up menu. The screen is black and shows a blinking white stripe in the left top corner. Even after waiting 1 hour it did not start anything. What am I doing wrong?

share|improve this question
add comment

1 Answer 1

If it is a new machine/laptop/netbook, then it may have "Secure Boot" switched on in the BIOS. In this case it may help to switch "Secure Boot" with UEFI to off in the BIOS. You may also try Boot Repair

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.