I was having a lot of sudden issues with my computer (slow on start up progressing quickly to not being able to start ...even in safe mode). Worked on several different things. Finally tried formatting hd and then installing Windows 7. Got errors so I said screw it and tried Ubuntu. Downloaded it (via my laptop), burned on DVD, and tried a disc boot on my desktop. Went through the whole installation, said it was successful and progressed to the restart. It stopped at a screen with an error (0x1b5a6) from 'hd0' I don't remember the error code verbatim. Now when I try restarting it I get to the initial page, hit 'enter' on Ubuntu..and it just sits at a blank screen. Eventually it runs through this screen with a bunch of code and then just sits there. I can't type anything and enter does nothing. Some things on the screen are:

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block (0,0)

I don't know what else to do... Restarting does not work. I have been working on fixing my computer for almost 2 days straight...