I'm trying to format my step-brothers' computer for them. I'm not sure what happened to it before, but it won't boot up, the first booting up screen where it checks the ram and all that just keeps comming and going. So I put my windows bootdisk in, but it's pretty crappy and only has an option to format the C drive but that didn't work, because there is no "C" drive, and if I try to install windows it says "Cannot find a place for a swapfile, cannot create swap file". So when that doesn't work it goes into a dos type thing, so I go through all the letters and the only two that work are the CD and DVD drives, F and G.
Does this mean my windows booting CD thing is a piece of crap, or that more seriously there's something phyically wrong with their harddrive?

Oh, I pressed del to go into setup, and I think it can still detect it kind of, because it says what they have for a harddrive as the primary master or whatnot. I dunno if that means anything, though.