I have an IBM 600E laptop that I last used in July, 2004. Since then it's been sitting on the dinning room table. Today I go to use it and it won't power-on at all. I tried 3 different power supplies and nothing. The power supplies are good because I was able to use them on another 600E and they all worked. I swithced hard drives with another 600E and the laptop would boot-up. Does any one have an answer as to why today the laptop will not power on?