Video crash on boot from CD

You can try to change video resolution...
- first try to dynamically change screen resolution plese the press CTR + ALT + "+" and/or CTRL + ALT + "-"
- Try to restart the graphic layer press CTR + ALT + BACKSPACE

Reconfiguring your xserver-xorg may help you.

Please open a Terminal and type:

To make a backup copy of your actual /etc/X11/xorg.conf type:

cd /etc/X11
sudo cp xorg.conf xorg.conf.bak

give your user password when requested, you don't see nothing when you type it, then press enter.

Then try to reconfigure your xserver-xorg

sudo dpkg-reconfigure xserver-xorg

answer to the simply questions, select multiple more than one screen resolutions when asked, then restart the pc.

If something goes wrong you can restore the saved copy of your old configuration, open a terminal or login to a virtual terminal by pressing ctrl+alt+F2 and type:

cd /etc/X11
sudo cp xorg.conf.bak xorg.conf

and restart the pc, type:

sudo reboot

Hope this helps

Sorry please ignore previous answer isn't related to your question...

- Booting from Ubuntu live install cd:
 * if you are in trouble with screen graphic user interface
   (usually the screen is black with a blinking cursor or screen out of range message):
- first try to dynamically change screen resolution please the press CTRL + ALT + "+" and/or CTRL + ALT + "-"
- Try to restart the graphic layer press CTRL + ALT + BACKSPACE

If you are still in trouble... please reboot your pc and starting with Ubuntu live cd please try to put some common Ubuntu kernel live cd options you can find the boot options howto here:
https://help.ubuntu.com/community/BootOptions

Remove the "splash" and "quiet" options to see more boot infos message and/or errors.
Then try some commons parameters by putting them one by one or together:
noacpi nolapic nodma all_generic_ide

If this don't work i suggest you to download and burn on a cd at lower speed you can do (4x), here an howto https://help.ubuntu.com/community/BurningIsoHowto, the Ubuntu alternate install cd iso image ( ubuntu-8.04-alternate-i386.iso ) you can download this cd from here: http://releases.ubuntu.com/8.04/

If you are in trouble to download you can try to install and use a torrent client Deluge http://www.deluge-torrent.org/downloads.php to get
your desired Ubuntu iso image http://releases.ubuntu.com/releases/8.04/ please select a .torrent file

Ubuntu min system requirements https://help.ubuntu.com/community/Installation/SystemRequirements
Here the steps to install https://help.ubuntu.com/community/GraphicalInstall

*** if you are installing in dual boot mode Windows + Ubuntu

Please make sure you Windows partition have no errors on it.

Booting in Windows force an a complete hard disk check.
Then reboot again in Windows and make a clean shutdown.
Be sure to boot in Widows twice and to get a clear Windows shutdown.

***

Always useful is the online Ubuntu doc https://help.ubuntu.com/8.04/

Hope this helps