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Thread: computer reboots itself after monitor showing "no signal"

  1. #1
    Join Date
    May 2008
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    20

    computer reboots itself after monitor showing "no signal"

    I completed installation of ubuntu desktop. It rebooted, after loading bios, the screen says 'no signal', a few seconds later it reboots itself again and this repeats untill I turn off the computer.

    What can I do to get the system to start?

    Feedback is appreciated.
    Thank you!

  2. #2
    Join Date
    Aug 2007
    Location
    Kottawa, Sri Lanka
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    7,387
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: computer reboots itself after monitor showing "no signal"

    Do you manage to reach the GRUB menu before the PC restarts?
    Think carefully before executing commands containing "rm", especially "sudo rm -rf ", if you require more information concerning this matter, read this.
    I am an experimenter, give me the most stable OS and I can make it unstable in a few hours.

    C == seriously fast == FTW!

  3. #3
    Join Date
    Oct 2005
    Location
    De Kwakel - Holland
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    3,657

    Re: computer reboots itself after monitor showing "no signal"

    Quote Originally Posted by realbuntu View Post
    I completed installation of ubuntu desktop. It rebooted, after loading bios, the screen says 'no signal', a few seconds later it reboots itself again and this repeats untill I turn off the computer.

    What can I do to get the system to start?

    Feedback is appreciated.
    Thank you!
    This is assuming you do see your bootloader (Grub)..
    Boot to singe/safe-mode and try to reconfigure your X-setup like so..
    Code:
    dpkg-reconfigre xserver-xorg

  4. #4
    Join Date
    May 2008
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    20

    Re: computer reboots itself after monitor showing "no signal"

    No I was not able to reach the GRUB. Another kind forum member suggested this.

    Can you reach the BIOS settings? (should be one of the F1, F2, ..., F(n) keys)
    If so, change to boot from CD, dowload and burn the Super Grub Disc and boot the computer with the disc in the tray. That should restore your system.

    Trying it soon.

  5. #5
    Join Date
    May 2008
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    20

    Re: computer reboots itself after monitor showing "no signal"

    It can boot up using the Super GRUB. I choose auto fix. Even it said success, then I remove the CD, rebooted. Same problem occured. So I try the advance option, got to the part where it says "Partition to Boot"

    The screen came to the following:

    Booting '1 hda1 sda1 (hd0,0) hd0s1 ext2fs Ubuntu 8.04 \n \l'

    set out_device=(hd0,0)
    set out_hurd_hd-hd0
    .
    .
    .

    Error 30: Invalid arguement

    Any advice is appreciated!

  6. #6
    Join Date
    May 2008
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    20

    Re: computer reboots itself after monitor showing "no signal"

    Here is some thing I found, again I have no idea where to go from here.

    Booting command-list

    findf /grub/stage1 /boot/grub/stage1
    root (hd1,0)
    Filesystem type is ext2fs, partition type 0x83
    setup (hd0)
    Checking if "/boot/grub/stage1" exists... yes
    Checking if "/boot/grub/stage2" exists... yes
    Checking if "/boot/grub/e2fs_stage1_5" exists... yes
    Running "ebmed /boot/grub/e2fs_stage1_5 (hd0)"... failed (this is not fatal)
    Running "embed /boot/grub/e2fs_stage1_5 (hd1,0)"... failed (this is not fatal)
    Running "install /boot/grub/stage1 d (hd0) /boot/grub/stage2 p /boot/grub/menu.lst " ... failed

    Error 17: Cannnot mount selected partition

  7. #7
    Join Date
    May 2008
    Beans
    20

    Re: computer reboots itself after monitor showing "no signal"

    http://ubuntuforums.org/showthread.p...46#post5032846

    More discussion is here at this thread.
    Im still working on this!

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