ok well here's the stroy, when i got my first comp (about 8 years ago) it ran great. but then i up graded and later on upgraded again but gutted out my second comp. so my first comp i gave to my little borther just so he can have it to watch movies on and play music and do what evere hw he had on it. well it ended up breaking down yesterday and when you start it up it will be on for like max 3mins and then it will just shut it's self on. so i took it's HD and it's cd and dvd drive and put it in my old dell since i knew that my dell worked fine but it just didn't have a cd or HD drive. so i went to go reformat the hard drive and install windows xp on the new HD but then it just turned off. so i know it's something wrong with the HD. what im wondering is if there is any way to wipe a HD clean with out turning on the computer. because im sure that there is something on the HD thats making it restart. so is there any way to wipe the HD with out turing the comp on?