I have this unit, and its pretty odd. I bought a new power supply, and all I get is either a blinking lighting bolt. Sometimes it will stay solid, but not when I turn it on. When I power up the laptop, the lighting bolt goes away. Then it tells me that its not plugged in when windows boots. Every once in a while I can get it to show that its plugged in(in XP), when I movie it around in the right spot. Is that a bad AC jack on the motherboard? Thanks for any input!