Well, my PC's mobo is FUBAR atm. (wow I just wrote half a sentence using nothing but acronyms

) So, my mom asked me to put our hp machine that became my PC back together, I got it all hooked up now

but it won't boot into Vista and when I get into the XP login screen my mouse will not work. I can't go and change any BIOS settings because, like I said, I am using the hp stuff and no longer have all my tools and goodies to work with. Do you guys know anything I could do to potentially fix this? Or do I need to get a new hard drive altogether?