I have this dell laptop that is fucked up. I put ubuntu on it a long time ago, and it worked for a little while but would eventually freeze. Now it will boot, but not show any bios screens, and the ubuntu sign in page will show up a minute or two later. When I try to login, I get a bunch of lines across the screen, so I can see the background, but its not that clear, and it wont login. Why wouldnt the bios page be showing? I downloaded the ultimate boot cd but it when I put in the cd and boot up the screen just stays black. It doesnt go to ubuntu, but it doesnt boot this either. Any thoughts?