I am attempting to reboot a Dell Inspiron 600m for a friend. I was able to install a fresh copy of Windows XP on it. The problem I am experiencing with it is that it often refuses to start up. I simply get a few lights, then they turn off. No attempting to run the CPU/Hard Drive etc. I would assume the laptop is fried but it does not always do this. It also sometimes starts up and runs windows with no problems. Any ideas on what is causing this problem and how to fix it?