I have a dell laptop that has worked fine for about a year and a half now and all of the sudden it shuts itself off for no reason. I have made no hardware changes and ive tried to reinstall windows to see if that helped but i couldnt even make it through the installation without the laptop shutting off. please give me a hand here idont know if its maybe the battery or hard drive or anything else im very stuck here. I would appreciate any help at all.