Ok, so here's what happened, my freind gave me his old HDD external hard drive, and when I put it in, it was fine untill I started downloading a DLC pack from Fallout 3, and thats where it began. My Xbox 360 wouldn't turn on and instead, like anybody else who has hard drive problems, it has a red ring around the power button. So I take out the hard drive and I turn it back on, and I found many corrupted files, so I deleted them, and they kept coming back, than finally after a week, it dissapears permanantly. So I thought that did the trick, so I put in the hard drive, and it still wouldn't turn on. So what I guess I'm trying to say is that, is there a cheap solution to this without buying another one?