My Dell XPS (with ubuntu preinstalled on it,
EDIT1: it was bought on 2014 June-July) does not start.
Pressing power on button, a black screen is showing this text:
Missing operating system. Operation System not found
I was thinking to restore
grub (I don't even know if it is installed) using
boot-repair from a live usb, but when I try to start any ubuntu image among ubuntu 12.04, ubuntu 15.04, boot-repair-disk, those aren't starting, remaining frozen on ubuntu splash screen.
I tried to start from an usb device
dell-12.04.2_20130822_0809.iso too, but this image stops on a command prompt having the label
I also tried Super Grub2 Disk from Ultimate Boot CD, without success (maybe I am missing something).
Does anybody have suggestions?
PS. I checked out from the BIOS if UEFI mode was enabled and it turned out that it is NOT enabled: is this common for a DELL XPS? EDIT2: Trying to enable UEFI returns a black screen with this text: No bootable devices - strike F1 to retry boot, F2 for setup utility. Press F5 to run onboard diagnostics.
Using gparted from a live usb (I finally booted an ubuntu 15.04 distro), as @Buck said, I found out that file system was not properly recognized (maybe damaged).
fsck to repair damaged file system, and finally booted the system successfully, except for wi-fi card that stopped working.