Okay, my friend got sick of his xbox, and gave it to me. he couldn't find anyone to fix it, and i thought "free xbox? what the hell". So I get it home, and it works the first time. after that, when i turn it on, the green light comes on, but the menu never comes up. i'll hit the disc drive button to open it, and it just makes a clicking sound once or so, and the light starts flashing green. this is an un-modded xbox. i think i may have to replace the drive, but i'm not sure. any ideas? could it just be a lose wire or something? all help is appreciated.