when the CD/DVD inserted, it doesn't appear and my display adapter can't recognized by Edubuntu

when the CD/DVD inserted, it doesn't appear the content of the volume. And when I try to mount it, I have a warning: Unable to mount the selected volume, with details : mount: special device /dev/hda does not exist.
My display adapter can't recognized by Edubuntu and when I try to activates the Desktop effect, its always appears white blank screen.
And when I try to connecting to the LCD Projector, its doesn't appears anything whit the blue screen and no signal.
I try it on my both two laptops with wide screen: HP Presario V3500 and Axioo M54V

ProblemType: Bug
Architecture: i386
Date: Thu Aug 2 06:21:43 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/gnome-panel
Package: gnome-panel 1:2.18.1-0ubuntu3.1
PackageArchitecture: i386
ProcCmdline: gnome-panel --sm-client-id default1
ProcCwd: /home/panprop
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-panel
Uname: Linux edubuntupanprop 2.6.20-16-generic #2 SMP Thu Jun 7 20:19:32 UTC 2007 i686 GNU/Linux