Hi. I have a Lenovo Thinkpad SL140, and it will not turn on. When I connected the charger to the laptop, the battery indicator would flash green a single time, turn off, then turn solid green. The laptop would not turn on even with the charger plugged in. No other lights, drive noise, fans, nothing turned on. I tried to use the computer plugged in but with no battery. No go. I also tried the "Flea Power" method, didn't work. My charger does work. I was wondering if I have a permanently dead battery or is my laptop done for good?