So I come home from school today and sit down at my computer, only to find that it has entirely frozen, and the hard drive light is on and not going off, despite the fact that there shouldn't be anything going on on the computer. So I do a hard reset and it boots back up, I check my hardware monitor in the BIOS and nothing seems unusual there (temperatures and fans are normal), so it continues to boot. It gets to loading Linux, and it sounds as if it's squeaking constantly for about a minute. It also gives me some strange IDE and EXT3 error-type messages and is generally slow booting up (although this could be because of the hard reset, I'm not sure). It's mainly the squeaking that bothers me, is it likely the hard drive, or could it be something else? As I type, the hard drive light is repeatedly going on and off, unusual since there isn't anything going on on the computer (other than Mozilla and the usual background things). There's no characteristic clicking sound, however. Anyone know how I should check whether it's the drive? I'd like to figure it out quickly so that if needed I can migrate before it dies entirely.