Sounds like you may have jumped in at the advanced troubleshooting a bit early!
If it came up with the message down the bottom that the kernel is alive (and you should see a login prompt at the top, briefly) before the screen goes black, then it is just that the av wizard is starting and not outputting in a way that your display can handle. You should have seen the Kubuntu splash screen and progress bar before this as well, but maybe not if your video is not set up properly.
If you see what I described, then start by searching the wiki for troubleshooting tips for the av wizard. Particularly pressing keys 1-0 to choose the correct output (ie, vga, dvi, etc) and a resolution that your display can handle. Give it at least 15 seconds to settle down after pressing any of the number keys.
If you are not even seeing the progress screen before this, and you have more than one video chipset (eg one on board and another on a card) then you must disable or at least set as secondary the one you are not using in your BIOS. If you cannot actually disable then you will need further instructions...
8.04 yes I assumed it would not work as well but had to give it a try.
I'll have alook in the manual once again(although I actually followed it strictly)
advanced, to fast? =) ok..
Well thank you very very many this was very good input.
I do not get the splash screen. Right after choosing install mce, I get the Kernel alive and in the top of the screen it's written or shown(very fast) something about a acpi timer and I think an error as well, hence the acpi troubleshooting. So that's nothing that should be bothered about?
Can I somehow monitor everything that is being done after selecting this Install Mce? That would really help, to see where it stops. Tried to take away the "quiet" option(to see whats happening). Am I on the right track then?
I saw in the bios during troubleshooting that the graphic card for some reason preffered is PCIe but I use the motherboard graphic(VGA). Tried to disable and tested again but the scenario was still the same. (will however make another try later today)
Note that This is during the installation phase and the disk was clean.
Can the Soundcard in the PCIe slot have anything to do with this?