Computer help?

[Kaistine]

My computer doesn;t seem to be starting up. I dont even make it to windows booting up, it just sits at the screen where it says I can press DEL to enter setup or tab to view bios info, but pressing tab or del dont actually do anything. I think it might be a problem with the hard drive or the motherboard, but I dont really know much about computers so I figured I'd see if you guys have any idea whats going on.