I have a HP Pavilion g series laptop that all of the sudden went off & won't come back on. When I plug the power to it with the batter attached, the little light next to the power plug is white for a few seconds then turns to an amber color. When I detach the battery & plug the power to it, the little light stays white. When I turn it on nothing appears on the screen & I can hear the fan start then it immediatley stops. The power button stay lit up with a color white & the f12 button has a little light on it is the color amber. No beep codes or anything on the screen. I have reseated teh hard drive & RAM but that has not fixed it. I have also took the battery out & held the power button in for 60 seconds then let go plus I have tried a good RAM stick with no luck. This laptop has Windows 7 on it. This did not reset anything either....any other suggestions as to what this could be?