My PB laptop will not boot up. Fan comes on and stays on, drive lights flicker but then die. Inserting a cd/dvd in the drive however makes to drive come back on, searches but then dies again. I have damaged my start up disk. Do you think a start up disk would fix this? How do I get another start up disk? If its more than using a start up disk, then what could be the problem? I'm using windows xp, both batttery and mains power. I have removed the cmos battery and replaced it after a spell, but still nothing. Any help?