Comment 2 for bug 275742

Thanks for your bug report! In addition to what you already tried, I would be interesting to know if ubuntu LiveCD can start if you use a different device than your current CD drive to start the Live environment. I know two ways to do this, in case you want to try the adventure :

1. External USB CD drive, in case you have one. Vostro 200 should be able to boot from such devices.
2. LiveUSB, there is many ways to create LiveUSB pen drive described in ubuntu wiki, and even a tool exist to do it from a computer that is running the LiveCD : http://klik.atekon.de/liveusb/

In case you want to try it, there is also some chances to recover useful debugging informations if you want to try these instructions :

1. Plug a USB key that has only one partition in fat32 filesystem to your computer and try to boot it with the LiveCD.
2. When you get to the busybox prompt, type all following commands :
mkdir /mnt/USB
mount -t vfat /dev/sdb1 /mnt/USB
lspci -nnvv > /mnt/USB/lspci-nnvv.log
dmesg > /mnt/USB/dmesg.log
uname -a > /mnt/USB/uname-a.log
cat /proc/version_signature > /mnt/USB/version.log
umount /dev/sdb1

3. Disconnect your USB key, it should now contains 4 .log files that you can attach to this message and that will give a lot of informations about your hardware and about the problem.