I have a new Toshiba Satellite 350 laptop that was working fine. For no apparent reason it shut down and I can't get it to start again. I've checked the obvious things like battery & and power supply and they check out ok. Any ideas on what to do? I have a rescue disk but obviously can't use it because the laptop won't even go through the boot sequence. I push the power button the lights flash once and thats it? I have to close the lid, unplud the power supply before trying again; otherwise there is no response at all when I push the power on button.