My laptop will not turn on for some reason. No lights at all when battery is connected but when i plug in the AC adapter (with the correct voltage) i get a single white led light indicating that it is plugged in. When i press the power button the light turns off for 3-4 seconds then returns and thats it. It doesnt turn on. I did get it to turn on earlier today but it cut off about 30 seconds afterwards. Any help is welcomed. And yes i have tried the hold the power button down method and that didnt help at all.